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Existence precedes essence

"Existence precedes essence" is a foundational of existentialist philosophy, articulated by in his 1946 lecture , positing that human individuals first exist as contingent beings without any predefined purpose, nature, or essence, and subsequently forge their own essence through free choices and actions in a world devoid of inherent meaning. This inversion of traditional metaphysics—where, for objects like tools or in theological views, essence (a designed purpose or divine blueprint) precedes existence—underscores Sartre's atheistic , rejecting notions of a creator God who imparts fixed and instead emphasizing radical individual and responsibility. In Sartre's formulation, humans are "condemned to be free," bearing the burden of self-definition amid , with no external moral absolutes to guide or excuse decisions, leading to concepts like (anxiety from realizing this freedom) and the imperative to authentic self-creation over mauvaise foi (, or self-deception). The proposition gained prominence as a slogan for mid-20th-century existentialism, influencing literature, psychology, and ethics by challenging deterministic views in Marxism, psychoanalysis, and religion, though Sartre himself later critiqued its overly optimistic humanistic framing in works like Critique of Dialectical Reason, acknowledging social and historical constraints on pure freedom. Critics, including phenomenologists like Merleau-Ponty and theologians, contested its denial of pre-existing human capacities or intersubjective essence, arguing it overemphasizes voluntarism while underplaying biological or cultural givens, yet its enduring appeal lies in empirically observable human agency—evident in personal transformations and historical upheavals—over abstract essentialism.

Historical Origins

Sartre's Formulation in Existentialism is a Humanism

In his lecture "," delivered on October 29, 1945, at the Club Maintenant in and published the following year, presented "existence precedes essence" as the core axiom of . Sartre posited that humans, unlike manufactured objects, enter the world without a predetermined or purpose, requiring them to forge their own essence through lived choices. This reversal of traditional philosophy's essence-first ontology—rooted in Aristotelian and theological views of fixed human —emphasizes radical contingency: "man first of all exists, encounters himself, surges up in the world—and defines himself afterwards." Sartre illustrated the principle via analogy to artifacts. For a paper-cutter, the artisan conceives its utility (essence) before crafting it (existence), ensuring it serves a specific function without deviation. Humans, by contrast, possess no such antecedent design, as Sartre rejected divine creation or innate human nature in an godless universe; there is no blueprint from a creator god dictating purpose. Existence thus arrives "for-itself," raw and undefined, compelling individuals to invent meaning amid absurdity. This formulation counters essentialist traditions by insisting essence emerges retrospectively from actions, not innately: "There is no human nature... Man is nothing else but what he makes of himself." The lecture framed this as optimistic , rebutting critics who deemed despairing. Sartre argued it empowers agency: since no external constrains, every choice shapes not only but a universal pattern for , as selecting one's path legislates it implicitly for all. Yet this entails , for individuals cannot evade by appealing to predestined traits or societal norms. Sartre's atheist presupposition—absent in theistic existentialists like Kierkegaard—grounds the priority of , rendering a construct of rather than a static given. He clarified this against misreadings, such as equating it to arbitrary whim; choices must cohere into a consistent project, avoiding .

Antecedents in Kierkegaard and Nietzsche

(1813–1855) laid foundational groundwork for prioritizing existence over essence by critiquing systematic philosophy, particularly Hegel's, which he saw as subordinating the concrete individual to abstract universals. In Concluding Unscientific Postscript to Philosophical Fragments (1846), Kierkegaard asserted that "truth is subjectivity," arguing that genuine understanding demands personal appropriation through passionate inwardness rather than detached objective knowledge. This elevates subjective existence—the individual's lived relation to possibility, anxiety, and choice—above any pre-given essential structure, as selfhood emerges dynamically from relating oneself to oneself amid despair. Kierkegaard's three existence-spheres illustrate this progression: the aesthetic mode of immediate pleasure yields to the ethical demand for universal commitment, which in turn gives way to the religious sphere's , where the individual confronts and infinite resignation without rational to guarantee resolution. Unlike Hegel's dialectical system, which resolves contradictions into eternal , Kierkegaard insisted that existence's inwardness defies such abstraction, requiring authentic choices that define one's becoming. Friedrich Nietzsche (1844–1900) extended this rejection of in a post-theistic context, dismantling metaphysical and moral absolutes to affirm human self-creation. With the proclamation "" in (1882), Nietzsche highlighted the collapse of transcendent guarantees for human nature, compelling individuals to interpret and value existence through perspectival lenses rather than inherent truths. His posits that "facts are only interpretations," denying fixed essences in favor of drives shaped by the , where the self constitutes a fluid multiplicity overcome via eternal recurrence and the ideal. In (1889), Nietzsche explicitly countered essentialist assignments of qualities, declaring that "no one gives man his qualities—neither God, nor society, nor his parents and ancestors, nor he himself," underscoring that character forges through active interpretation and affirmation of life's contingencies. This anticipates existential by rejecting preordained , positing instead that values and arise from acts of valuation amid nihilism's void. Both thinkers thus prefigure the dictum by insisting on existence's primacy, though Kierkegaard's faith-oriented subjectivity contrasts Nietzsche's amoral, life-affirming creativity.

Contrast with Pre-20th Century Philosophy

In traditional Western philosophy prior to the 20th century, the metaphysical framework predominantly affirmed that essence precedes existence, positing that the defining nature or "whatness" of a thing determines its possibility and actualization. This essentialist paradigm, rooted in ancient Greek thought, viewed essences as prior principles that structure existence rather than emerging from it. For Plato, the Theory of Forms established eternal, immutable ideals as the true reality, with sensible particulars gaining their existence through participation in these pre-existing essences; a physical object like a chair exists only insofar as it imitates the Form of Chair, which itself subsists independently of any instance. Aristotle refined this approach by identifying essence with the substantial form that actualizes potentiality into a specific kind, as articulated in his concept of to ti ên einai ("the what it was to be"), which delineates a thing's core attributes and before its individual instantiation. In this hylomorphic view, existence realizes an antecedent inherent to the ; a , for instance, exists as a because rationality constitutes its essential form, guiding its development from matter toward fulfillment. Medieval Scholastics, exemplified by , maintained the distinction between and in created beings—where delimits what a thing is, while actualizes it—but emphasized that essences derive from divine intellect, with God's eternal ideas serving as archetypes preceding temporal creation. For Aquinas, only in God does coincide with ; in all else, acts as a limiting potency that must conform to, underscoring a created order where definitional priority governs being. This reversal from existentialism's dictum—that humans exist contingently without predefined , forging their nature through choices—marked a departure from pre-20th-century anthropologies, which integrated human within a teleological or divine plan, often tying individual to species-specific or God-given purposes rather than radical self-determination. thus framed human life as oriented by inherent potentials, contrasting sharply with the post-theistic emphasis on as a devoid of prior blueprint.

Core Philosophical Components

Distinction Between Existence and Essence

In classical metaphysics, essence (Latin essentia) refers to the intrinsic nature or of a thing—the set of attributes that define what it is, such as its and potentialities. (Latin esse), by contrast, denotes the act of being or the actuality whereby that essence is realized in the concrete order of reality, rendering it not merely possible but actual. This distinction originates in Aristotle's hylomorphic theory, where essence comprises form (defining structure) and matter (substrate), but requires actualization to exist; further refines it, positing a real distinction between essence and existence in all finite beings, where essence limits and receives existence as an extrinsic perfection from a divine cause. In this framework, essence is logically prior: for artifacts like a , the designer's conception of its purpose and structure (essence) precedes its fabrication and thus its existence; similarly, natural kinds possess essences that determine their existence through efficient causes. Jean-Paul Sartre challenges this priority specifically for human beings in his 1946 lecture Existentialism is a Humanism, asserting that "existence precedes essence." He argues that humans, unlike manufactured objects, "first of all exist, encounters himself, surges up in the world—and defines himself afterwards," lacking any preexistent blueprint or divine . In , the absence of a creator eliminates the traditional causal sequence where essence is authored prior to instantiation; instead, contingent human existence—marked by and into a purposeless world—precedes any self-determined essence forged through free projects and choices. This inversion implies no universal independent of individual action: essence emerges retrospectively from lived commitments, rendering it fluid and subjective rather than fixed and objective. The distinction bears ontological weight, as traditional views treat essence-existence composition as metaphysically necessary for (essences do not self-actualize), while Sartre's formulation prioritizes temporal and experiential sequence for s, emphasizing radical indeterminacy over teleological order. Critics from scholastic traditions contend this overlooks the real distinction's explanatory power for why beings participate in without being identical to it, potentially reducing to . Sartre counters by analogizing to cases only illustratively, maintaining the reversal as unique to conscious , unbound by essentialist predetermination.

Radical Freedom and the Role of Choice

Sartre's conception of radical freedom stems from the premise that lacks a predefined , rendering individuals wholly responsible for authoring their own nature through actions. In this view, is not an optional capacity but an inescapable condition: humans are "condemned to be free," as every circumstance, no matter how constraining, still permits in response, with no divine ordinance, , or absolving accountability. This radical autonomy contrasts with objects like a , whose —its purpose and form—is imposed by a prior to ; for humans, no such prior design exists, so manifests as the necessity to invent oneself amid contingency. The role of choice is foundational, as each decision constitutes a projection toward future possibilities, retroactively shaping one's from the flux of . Sartre illustrates this in examples such as a gambler who, facing loss, chooses to interpret it as mere misfortune rather than a defining , thereby evading the to redefine their path; yet, the to deny itself underscores the inescapability of . arises from this realization, particularly in moments of solitary where external justifications collapse, compelling confrontation with the vertigo of absolute responsibility—not mere psychological dread, but ontological awareness that one's projects bear implications for , as implicitly legislate values for all. In (1943), Sartre grounds this ontologically in as "nothingness," which negates given facts (, such as one's body or environment) and enables through projects, ensuring that no situation exhausts possibility. thus operates beyond empirical causation, as is not a but a perpetual "for-itself" fleeing toward unrealized ends, defying deterministic reductions to or that presuppose an essence preceding acts. Critics, including determinists, challenge this by citing evidence of unconscious drives or neural constraints, but Sartre counters that even appeals to such factors represent chosen interpretations, preserving 's primacy unless essence is proven antecedent—a claim unverified by causal chains observable in . This framework demands : embracing without flight into , where one pretends is limited to evade burden.

Responsibility, Bad Faith, and Authenticity

In Sartre's existentialist philosophy, the axiom that existence precedes essence entails absolute personal responsibility, as individuals must create their own values and essence through free choices without recourse to predetermined nature or divine ordinance. Sartre asserts that humans are "condemned to be free," meaning they bear full accountability for their actions and the consequences that shape both their lives and the broader human condition, since each choice exemplifies what humanity ought to be. This responsibility generates angoisse (anguish), an awareness of freedom's weight, where excuses like societal norms or biological determinism fail to absolve the individual, as all such factors are incorporated into conscious projects rather than dictating them exogenously. Bad faith (mauvaise foi), a central evasion of this responsibility, constitutes self-deception wherein individuals deny their radical by conflating themselves with static roles, objects, or external forces, thereby reducing the for-itself (conscious, transcendent being) to the in-itself (inert, determined being). Sartre describes as possible only because involves a pre-reflective of its own , allowing one to "play at being" something fixed—such as a waiter who excessively embodies his profession to avoid the of , or a who ignores a suitor's advances by feigning obliviousness to sustain . This permeates social life, including political complicity in oppressive systems, where participants pretend their roles compel rather than enable choices, thus abdicating for collective outcomes. Authenticity, in contrast, demands resolute acknowledgment of and , eschewing to pursue self-chosen projects that affirm one's amid (the given circumstances of ). Sartre frames authentic living as "," where individuals project future-oriented goals while integrating past and present without illusory identification, thereby creating through consistent, lucid action rather than evasion. Yet, authenticity remains aspirational and fraught, as the human condition's inherent lack—its nothingness—precludes total self-coincidence, compelling perpetual re-commitment to despite temptations of ; Sartre warns that even moralistic pursuits of can devolve into new deceptions if not grounded in individual choice. These concepts interlink such that underpins the rejection of toward , forming the ethical core of existentialism's response to a godless, essence-less .

Implications for Human Condition

Confronting the Absurd and Meaning-Making

The notion that existence precedes essence compels individuals to face the absurd condition of human life, characterized by the contingency of being and the absence of inherent cosmic purpose. In Jean-Paul Sartre's framework, this absurdity manifests as nausée—a profound dizziness arising from the realization that one's existence is unjustified and devoid of predefined meaning, as detailed in his 1943 treatise Being and Nothingness. Unlike traditional philosophies positing an essential human nature derived from God or reason, Sartre argues that humans are "condemned to be free," thrust into a world without blueprint, where every action must forge identity amid this void. This confrontation evokes anguish, as the individual recognizes the burden of total responsibility for self-definition, unalleviated by external absolutes. Sartre's response to the absurd lies in authentic meaning-making through deliberate choice and projection into the future. Rather than succumbing to despair or denial—forms of mauvaise foi (bad faith) where one evades freedom by adopting prefabricated roles—individuals must embrace their projects, creating values and essence via consistent actions that align with self-chosen ends. In his 1946 lecture "Existentialism is a Humanism," Sartre illustrates this by equating humanity to a sculptor who shapes purpose from raw existence, insisting that "man is nothing else but what he makes of himself." This process is not illusory but a causal reality of human consciousness, which introduces néant (nothingness) to negate given circumstances and invent possibilities, thereby imposing order on absurdity. Distinguishing Sartre from contemporaries like underscores this active stance: while Camus views the absurd as an irreconcilable clash between human reason's quest for meaning and the universe's silence, advocating revolt through defiant living without ultimate resolution, Sartre rejects such resignation. For Sartre, meaning is not discovered but fabricated by the for-itself (conscious subject), rendering the absurd a starting point for ethical invention rather than an endpoint. Empirical echoes appear in psychological studies of existential anxiety, where individuals report heightened purpose post-confrontation with meaninglessness, aligning with Sartre's claim that authentic transforms into self-authored significance—though critics note this risks absent intersubjective verification. Thus, confronting the absurd demands perpetual vigilance against inauthenticity, forging meaning as an ongoing, individuated endeavor.

Ethical and Moral Frameworks

The principle that existence precedes essence, as articulated by Jean-Paul Sartre, rejects the notion of preordained moral essences or universal ethical blueprints derived from divine, natural, or rational necessities, positing instead that moral frameworks emerge from individual acts of free choice that define personal and collective values. In this view, humans, lacking an inherent purpose or telos, confront a foundational ethical void where values are not discovered but invented through deliberate projects, rendering morality contingent upon authentic self-creation rather than adherence to external absolutes. Sartre emphasized that this freedom entails absolute responsibility, as individuals cannot defer ethical decisions to supposed essences, gods, or societal norms; every choice, by implying a universalizable model for human conduct, binds the chooser to account for its implications across humanity. This framework manifests in an "ethics of ambiguity" or engaged existentialism, where moral action prioritizes liberation from — that denies one's —and promotes in pursuing concrete, situation-specific goals over abstract imperatives. Sartre critiqued traditional moral systems, such as Kantian , for presuming a universal rational essence that constrains , arguing instead that ethical universality arises retroactively from individual commitments, as in his example of choosing to resist , which posits as a value for all. Critics within , including Sartre himself in later works like Notebooks for an Ethics (unpublished until 1983), noted the tension: while radical precludes deterministic ethics, it demands a provisional of to avoid , where inaction equates to complicity in . Empirical challenges arise from observations of under constraint, such as psychological studies showing influenced by factors, yet Sartre maintained that even perceived reflects a failure to assume , insisting on the primacy of conscious . In contrast to , which derives from an assumed human (e.g., Aristotelian tied to rational animality), existential frameworks treat virtues as post hoc constructs, forged in the "anguish" of without teleological guarantees. Sartre's position implies a rejection of through intersubjective reciprocity: one's , chosen in a shared world, must be defensible as a model for others, fostering an of mutual over egoistic . This has informed subsequent debates, with thinkers like extending it to , emphasizing situated freedom against essentialist gender roles, though Sartre's core insistence remains that progress hinges on transcending through value-creating acts. Ultimately, the framework underscores a causal in : outcomes stem from willed actions in contingent circumstances, not illusory , demanding vigilance against excuses that evade freedom's burden.

Individualism Versus Collectivism

Sartre's doctrine that existence precedes essence underscores a form of radical , positing that human beings, lacking any predetermined or social blueprint, must author their own essence through personal choices and projects. This view rejects collectivist frameworks that assign essence via group affiliations, such as , , or , which Sartre regarded as potential avenues for "bad faith" wherein individuals evade responsibility by subsuming their into collective identities. In his 1946 lecture , Sartre argues that since "man is nothing else but what he makes of himself," authentic existence demands prioritizing individual agency over conformity to societal or communal prescriptions, thereby critiquing deterministic collectivism as an of . This individualistic thrust aligns with existentialism's emphasis on subjective meaning-making, where collectivist systems—such as those deriving essence from or communal roles—risk imposing external definitions that undermine radical dom. Sartre contends that even in social contexts, s remain "condemned to be ," meaning choices must be owned personally rather than delegated to the group, as collective essences cannot precede or supplant existence. For instance, he critiques bourgeois as inauthentic but elevates proletarian or revolutionary commitments only insofar as they are freely chosen, not as imposed proletarian essences. This positions against pure collectivism, which might prescribe roles (e.g., one's essence as a worker under ), favoring instead a where universal values emerge from aggregated authentications. Sartre's later philosophical development, particularly in Critique of Dialectical Reason (1960), attempts to reconcile this with Marxist collectivism by framing group as an extension of individual freedoms fused in historical action. Here, arises not from predefined but from individuals serially or serially-grouped choosing to transcend through shared projects, such as revolutionary solidarity, without dissolving personal accountability. Critics, including some Marxists, argue this synthesis falters, as existentialism's ontological priority of the individual subject clashes with dialectical materialism's emphasis on collective historical forces determining . Nonetheless, Sartre maintains that true collectivity requires individual , preventing the group from becoming a new that precedes existence. Empirically, this tension manifests in Sartre's political engagements, such as his support for Algerian independence in 1954–1962, where he advocated anti-colonial struggle as individually willed resistance against imposed of , rather than passive subsumption into or class identities. Philosophically, the doctrine challenges collectivist ideologies by insisting that no society or system can legitimately define human a priori; instead, gain legitimacy only through ongoing individual recommitments, preserving amid interdependence. This nuanced critiques both atomistic and totalizing collectivism, advocating a praxis-oriented balance where existence's precedence ensures remains irreducible to group determinations.

Traditional Criticisms

Religious Perspectives on God-Given Essence

In Abrahamic traditions, human essence is viewed as divinely conferred at , establishing purpose and nature prior to individual existence. Christian doctrine, drawing from 1:26-27, holds that formed in His image (imago Dei), endowing rational, moral, and relational capacities oriented toward glorifying the and exercising over . This teleological framework, articulated by theologians like in the Summa Theologica (1265–1274), defines human essence as participation in divine likeness, with eternal destiny fixed by alignment to 's will rather than self-invention. Judaism emphasizes b'tzelem Elohim ("in the image of God"), per 1:27, as the foundational attribute conferring inherent dignity, free will within moral bounds, and stewardship responsibilities. Rabbinic interpretations, such as those in the (compiled circa 500 CE), extend this to ethical imperatives like and , positing an objective essence rooted in divine intentionality that precedes and constrains personal . This counters by grounding human value in transcendent origin, not subjective choice. Islamic theology, centered on (divine oneness), asserts that humans are created with fitrah—an innate disposition toward monotheistic submission—as outlined in 30:30 and hadith collections like (compiled 846 ). The purpose () is servitude to ('), with essence as vicegerents (khalifah) on earth per 2:30, rendering existence derivative of predefined divine decree rather than precedential. These views collectively critique Sartre's dictum by maintaining that sans God, purported radical freedom dissolves into , as human nature lacks external ; theological analyses note Sartre's own concession that theistic worldviews historically affirmed pre-given , enabling coherence absent in godless . Empirical alignment with scriptural , such as cross-cultural persistence of myths (documented in ethnographic studies from the onward), supports the causal primacy of divine in shaping societal moral structures over individualistic constructs.

Aristotelian and Thomistic Essentialism

Aristotle's metaphysics posits that the of a substance—what it is to be that kind of thing (to ti ên einai)—precedes and determines its , defining its core attributes, powers, and . In natural substances, such as humans characterized as rational animals, encompasses the formal cause that actualizes matter toward its end, enabling capacities like and , rather than arising from individual actions. This framework rejects the notion that is primary without inherent structure, as essences ground the possibility of stable kinds and teleological development, as outlined in the Metaphysics where substances are analyzed through their definable forms independent of particular instantiations. Thomas Aquinas synthesizes Aristotelian with , maintaining that in created beings, essence and existence (esse) are really distinct: essence delimits what a thing is, while existence is an act received from as the source of all being. For human persons, whose essence includes an intellective soul subsisting independently of the body, this distinction implies a fixed nature oriented toward union with the divine through reason and grace, not self-authored through choices alone. Aquinas argues in De Ente et Essentia (c. 1252–1256) that essences in creatures are potentialities actualized by esse, ensuring that human dignity and moral order derive from God-given form rather than radical . This essentialist tradition challenges the existentialist reversal by asserting that denying prior essence leads to incoherence, as human capacities for deliberation and purpose presuppose an underlying rational structure not reducible to free invention. Aristotelian-Thomistic views emphasize causal realism, where essences reflect divine intellect or natural kinds, providing objective teleology against the void of self-definition; for instance, Aquinas's proofs from efficient causality underscore that existence without essence-bound limits would dissolve distinctions among beings. Critics of existentialism from this perspective, such as those noting Sartre's inversion ignores metaphysical primacy of form, argue it undermines empirical observations of innate human traits like language acquisition and moral intuitions rooted in species-specific natures.

Empirical and Scientific Challenges

Determinism from Neuroscience and Genetics

Neuroscience research has produced evidence suggesting that conscious decisions may be preceded by unconscious brain processes, challenging the existentialist notion of unconditioned freedom in choice-making. In Benjamin Libet's 1983 experiments, participants reported the moment of conscious intent to flex a finger, but electroencephalogram recordings showed a "readiness potential" in the brain arising approximately 350 milliseconds earlier, indicating that neural activity initiates action before subjective awareness. Subsequent studies using functional magnetic resonance imaging (fMRI) have extended this, with Chun Siong Soon and colleagues in 2008 demonstrating that patterns in frontopolar cortex and parietal regions could predict abstract decisions up to 10 seconds before participants were consciously aware of their choice. These findings imply a deterministic sequence where brain states causally drive behavior, potentially limiting the scope for authentic self-creation through deliberate selection. Critics of these interpretations argue that such experiments involve simple motor tasks rather than complex moral or existential deliberations, and that conscious veto power remains possible post-unconscious initiation, as Libet himself proposed. Nonetheless, the replication of predictive neural signatures in more deliberate contexts, such as ethical choices, supports the view that much of human agency operates within neurobiological constraints, undermining claims of essence emerging solely from existence via unbound will. Genetic studies further bolster deterministic challenges by quantifying the heritability of traits central to and . Twin studies, including those from the Study of Twins Reared Apart initiated in 1979, reveal that monozygotic twins separated at birth exhibit IQ correlations of 0.70 to 0.80, far exceeding those of dizygotic twins (around 0.50), indicating genetic factors account for 50-80% of variance in intelligence by adulthood. estimates for traits, such as extraversion and , range from 30% to 60%, derived from large-scale meta-analyses of twin and adoption data, suggesting innate dispositions shape behavioral tendencies independently of environmental upbringing. These genetic influences extend to behavioral outcomes like risk-taking and political attitudes, with genome-wide association studies identifying polygenic scores predicting up to 10-15% of variance in such traits as of 2023. By establishing that predispositions to , temperament, and even moral intuitions are substantially encoded in DNA—evident from heritability rising to 80% for in later life—these posit an inherited "" that precedes and canalizes existential choices, contradicting the blank-slate of radical self-determination. While environment interacts with genes (e.g., via gene-environment correlations), the high narrow-sense implies causal primacy of biological endowments in forging life paths.

Evolutionary Biology and Innate Traits

challenges the notion that essence is solely self-determined by demonstrating that many cognitive, emotional, and behavioral traits are innate adaptations forged by on ancestral populations. These traits, including preferences for , aversion to , and modular responses to environmental cues like predator threats, manifest universally across societies and persist despite cultural variations, indicating a genetic foundation that predates individual existence. studies quantify this genetic influence, with meta-analyses of twin data revealing that such as and derive 50-80% of their variance from genetic factors, rather than solely from postnatal experiences. Twin studies, comparing monozygotic and dizygotic pairs reared apart or together, consistently estimate the of personality traits—encompassing the dimensions of extraversion, , , , and —at 40-60%, underscoring that genetic predispositions account for substantial individual differences independent of shared family environments. For instance, twins separated at birth exhibit greater similarity in levels and risk-taking behaviors than fraternal twins raised together, pointing to heritable components shaped by evolutionary pressures for survival and reproduction. extends this by identifying domain-specific adaptations, such as the proposed by Chomsky and refined through evo-devo research, which enables innate grammatical competence emerging in infancy across linguistic environments. Critiques of blank slate empiricism, which aligns with existentialist denial of pre-existing essence, highlight how evolutionary constraints limit behavioral ; for example, sex differences in mate preferences—men prioritizing fertility cues and women resource provision—persist globally with effect sizes of Cohen's d ≈ 0.5-1.0, attributable to differential reproductive costs under rather than alone. Genome-wide studies further corroborate this, identifying polygenic scores predicting up to 10-15% of variance in traits like and , rooted in ancient selective sweeps. While gene-environment interactions modulate expression, the baseline architecture of human psychology—evident in neonatal reflexes like the rooting response or phobias of snakes and heights—affirms that biological precedes and structures existential choices.

Debates on Free Will Evidence

The debate over for centers on whether human actions arise from undetermined choices or are fully caused by prior neural and environmental factors, with implications for existentialist claims that individuals freely author their . Neuroscience studies, particularly those examining brain activity preceding conscious decisions, have been invoked to challenge libertarian conceptions of —under which choices are neither determined nor random—but such evidence remains contested and inconclusive. For instance, Benjamin Libet's 1983 experiments measured a "readiness potential" in the brain's occurring 300-500 milliseconds before subjects reported of their intent to flex a , suggesting decisions may originate unconsciously. However, Libet himself argued this does not negate , proposing a "veto power" allowing conscious interruption of impulses, and emphasized the experiments involved simple, habitual actions rather than deliberate, value-laden choices. Critics of Libet's findings and subsequent replications contend they fail to disprove , as the readiness potential may reflect general preparation rather than specific , and conscious could still exert causal over outcomes. A 2018 of similar studies found no robust prediction of choices beyond chance levels when accounting for methodological artifacts, urging a high evidentiary bar for claims undermining . Moreover, experiments often conflate timing of with causation, ignoring that in complex scenarios—such as ethical dilemmas—may unfold over seconds or minutes, evading the millisecond-scale measurements used. Neurophilosopher Alfred Mele has highlighted interpretive overreach, noting that explains mechanisms of without necessitating incompatible with control. Proponents of , like , cite cumulative evidence from , , and neural circuits to argue choices are illusions shaped by biology and history, with no room for libertarian . Yet surveys indicate most affirm at least partial , reflecting toward eliminativist interpretations often amplified in media despite lacking decisive proof. Evolutionary perspectives offer counter-evidence: biologist Kevin Mitchell posits that selection pressures favor flexible, goal-directed , enabling adaptive deviations from deterministic trajectories, as seen in variable behaviors across genetically similar organisms. Compatibilist frameworks reconcile apparent determinism with responsibility by redefining free will as uncoerced action aligned with one's motivations, supported by empirical studies showing folk intuitions lean toward compatibility in everyday judgments of agency. Experimental philosophy surveys from 2020-2024 reveal mixed but non-overwhelming incompatibilist leanings, influenced by vignette wording rather than innate rejection of . These debates underscore that while illuminates unconscious influences, it has not yielded falsifiable evidence overturning , particularly given materialist presuppositions in some research that prioritize over agent causation. Ongoing fMRI and EEG studies, such as those probing in 2023-2025, continue to affirm subjective control correlates with behavioral outcomes, bolstering rather than refuting existentialist .

Cultural Impact and Contemporary Relevance

Representations in Literature and Media

In Jean-Paul Sartre's novel (1938), the Roquentin's encounters with the world's contingency exemplify the principle that existence precedes essence, as he recognizes that human life lacks a predefined or , compelling individuals to invent their own through deliberate choices amid . Roquentin's "nausea" arises from perceiving existence as superfluous and unformed, contrasting with artifacts that possess essences imposed by human design, thus underscoring the freedom and responsibility to self-define. Sartre's play (1944) dramatizes this concept through three damned souls whose interactions reveal that personal emerges not from innate qualities but from perpetual self-revelation and judgment by others, trapped in a of mutual definition without escape. The characters' futile attempts to deny their actions highlight the inescapability of , where is forged in the of the Other, reinforcing Sartre's view that humans exist first as blank projects awaiting authentication via conduct. In film, Pixar’s Soul (2020) portrays the idea through jazz musician Joe Gardner, whose pre-life "spark" and earthly experiences demonstrate that human essence is not predestined but constructed via pursuits and relationships, absent any cosmic blueprint. Film noir, as a genre, recurrently depicts protagonists navigating moral ambiguity and isolation, embodying existentialist tenets by showing characters who must author their identities in a deterministic yet absurd reality, often leading to self-destruction or fleeting authenticity.

Applications in Modern Psychology and AI Ethics

In modern psychology, applies the principle that existence precedes essence by framing human life as inherently purposeless until individuals actively define it through choices, thereby emphasizing personal responsibility over deterministic or predefined traits. This approach, influenced by Sartre's philosophy, integrates into therapeutic practices that confront core existential givens—, , meaninglessness, and mortality—to foster and reduce associated anxiety. Techniques such as and phenomenological exploration encourage clients to examine their lived experiences and construct subjective meaning, distinguishing existential methods from more prescriptive therapies like cognitive-behavioral approaches. Clinical applications include , adapted from Viktor Frankl's work but aligned with Sartrean freedom, which targets trauma-related conditions like PTSD by redirecting focus from suffering to self-chosen purpose; for instance, it has been used in treating migration-induced and prison-based existential distress, where grapple with enforced meaninglessness. Empirical support shows existential interventions correlating with decreased and anxiety symptoms via enhanced perceived , as measured in studies of meaning-centered therapies, though limitations arise from external factors like economic dependencies that constrain radical freedom. In AI ethics, the Sartrean reversal—that for humans existence precedes essence, but for AI, engineered purpose (algorithms and objectives) precedes instantiation—highlights tensions in attributing to machines. Ethicists invoke to argue that AI lacks intrinsic or self-defining , placing moral squarely on designers for outcomes like or decision automation, as seen in frameworks for AI governance post-2020s regulatory pushes. This view cautions against over-reliance on AI systems, which could diminish capacity for authentic self-creation by mediating choices in domains such as screening or diagnostics. Debates extend to potential superintelligent , where emergent behaviors might simulate essence formation, challenging efforts to ensure systems remain tools subservient to human-defined values rather than autonomous entities claiming self-derived purpose. Critics of anthropomorphic projections emphasize empirical reality: current , as of 2024, operates via predefined functions without the "condemned to be free" condition Sartre describes, underscoring the ethical imperative for humans to exercise in AI deployment to preserve their own existential primacy.

References

  1. [1]
    Existentialism is a Humanism, Jean-Paul Sartre 1946
    Existentialism Is a Humanism. Written: Lecture given in 1946. Source: Existentialism from Dostoyevsky to Sartre, ed. Walter Kaufman, Meridian Publishing Company ...
  2. [2]
    Jean-Paul Sartre - Stanford Encyclopedia of Philosophy
    Mar 26, 2022 · ... existence precedes essence”, which we will explicate shortly, seems committed to denying. Without considering here the extent to which ...
  3. [3]
    Existence Precedes Essence: What Sartre Really Meant
    Existence precedes essence: the constraints. While they think existence does indeed precede essence, existentialist philosophers do acknowledge that our self- ...Missing: original | Show results with:original
  4. [4]
    Jean Paul Sartre: Existentialism - Internet Encyclopedia of Philosophy
    As Sartre later puts it in Existentialism is a Humanism, to be human is characterised by an existence that precedes its essence.
  5. [5]
    Søren Kierkegaard - Stanford Encyclopedia of Philosophy
    May 22, 2023 · A common way to interpret Kierkegaard's thought is in terms of three “existence-spheres”: the aesthetic, the ethical and the religious. The idea ...
  6. [6]
    Existentialism - Stanford Encyclopedia of Philosophy
    Jan 6, 2023 · This is what Kierkegaard means when he describes existence as “a relation that relates to itself” (1849 [1989, 43]). Existence is a reflexive ...
  7. [7]
    Friedrich Nietzsche - Stanford Encyclopedia of Philosophy
    Mar 17, 2017 · Critique of Religion and Morality. Nietzsche is arguably most famous for his criticisms of traditional European moral commitments, together with ...
  8. [8]
    Twilight of the Idols by Friedrich Nietzsche
    That no one gives man his qualities--neither God, nor society, nor his parents and ancestors, nor he himself. (The nonsense of the last idea was taught as ...
  9. [9]
    Plato's Middle Period Metaphysics and Epistemology
    Jun 9, 2003 · To the extent that Plato recognizes the notion of existence, since being an essence seems, by Plato's lights, to be the superlative way to be, ...
  10. [10]
    Aristotle's Metaphysics - Stanford Encyclopedia of Philosophy
    Oct 8, 2000 · ('Essence' is the standard English translation of Aristotle's curious phrase to ti ên einai, literally “the what it was to be” for a thing.The Subject Matter of Aristotle... · Substance and Essence · Actuality and Potentiality
  11. [11]
    Aquinas: Metaphysics | Internet Encyclopedia of Philosophy
    Essence/existence composites merely have existence; whatever an essence/existence composite is, it is not its existence. Insofar as essence/existence composites ...The Nature of Metaphysics · Essence and Existence · Participation · Matter and Form
  12. [12]
    CATHOLIC ENCYCLOPEDIA: Essence and Existence - New Advent
    Essence, however, is properly described as that whereby a thing is what it is. Existence is that whereby the essence is an actuality in the line of being.<|separator|>
  13. [13]
    Aquinas on Existence and the Essence/Existence Distinction -
    Jul 24, 2021 · Aquinas's doctrine of existence together with his doctrine of the distinction of essence and existence serve as the most radical break he has with Aristotle.
  14. [14]
    [PDF] Aquinas on Existence and the Essence/Existence Distinction
    Aquinas's doctrine of the structure of existence and its relation to essence is critical to his entire metaphysic, but most importantly to his understanding ...
  15. [15]
    [PDF] Jean-Paul Sartre's Existential Freedom: A Critical Analysis
    Jul 11, 2023 · According to Sartre, we can authorize man's freedom to be absolute because man's existence precedes essence. Freedom is given to every ...
  16. [16]
    [PDF] “Man Makes Himself” by Jean-Paul Sartre - Philosophy Home Page
    Jean-Paul Sartre. Existentialism Is A Humanism. Trans. by Philip Mairet. Public. Lecture, 1946. 1. Page 2. “Man Makes Himself” by Jean-Paul Sartre into the ...
  17. [17]
    Hannah H. Kim, Camus and Sartre on the Absurd - PhilArchive
    Oct 29, 2021 · The Camusian absurd is a mismatch between theoretical reasoning and practical reasoning. The Sartrean absurd, in contrast, is our theoretical ...<|control11|><|separator|>
  18. [18]
    The Camusean absurdism vs. Sartrean existentialism - [NO] CLUE
    Nov 4, 2022 · Both Sartre and Camus believe in the intrinsic meaninglessness of life. But how they go about finding closure is where they differ.
  19. [19]
    [PDF] Sartre's Existentialism and the Concept of 'The Absurd' - The Academic
    On this basis it discusses the questions of freedom, responsibility and absurdity in Sartre's creation with the focus on “Being and Nothingness” and “No Exit”.<|separator|>
  20. [20]
    The Ethical Implications of Existential Freedom at the Individual and ...
    Apr 9, 2025 · ... Sartre's main theory in “Existentialism is a Humanism” that existence precedes essence. The paper uses this foundation to consider how the ...
  21. [21]
    [PDF] Anguish, Abandonment, Despair: Existentialism's Promise of Hope ...
    life: existence precedes essence. In this way to exist is to be free. Existence is freedom. One cannot separate choice from existence, and one cannot find a ...
  22. [22]
    [PDF] Jean-Paul Sartre, “An Existential Ethics
    Existentialism stresses freedom and personal responsibility; if we turn from these, then we are guilty of "bad faith." Sartre also demands that a kind of ...<|separator|>
  23. [23]
    [PDF] Inventing an Ethics: Existentialism and Engagement through Literature
    for Beauvoir and Sartre. 34 Since “existence precedes essence” no essential notion can dictate the movement from bare existence to essence.
  24. [24]
    Existential Ethics - Philosophy Home Page - Lander University
    Explain what "existence precedes essence" means. Existence: the fact of being, the presence of something, the "thisness," "that it is." Essence: the kind ...Missing: implications | Show results with:implications
  25. [25]
    [PDF] Freedom and responsibility in Jean-Paul Sartre's existentialism
    Apr 28, 2025 · Sartre warns that in confronting the reality of life, filled with uncertainty and chaos, individuals may fall into "bad faith," a state where ...
  26. [26]
    Sartre's Political Philosophy
    Bad faith is an original notion developed by Sartre, first in Being and Nothingness ... In Notebooks Sartre expanded his analysis of racist bad faith by ...
  27. [27]
    Sartre and Marxist Existentialism - The University of Chicago Press
    In this important book, Thomas R. Flynn reinterprets and evaluates Sartre's social and political philosophy, arguing that the existential ethics of Sartre's ...
  28. [28]
    Sartre and Marxist Existentialism: The Test Case of Collective ...
    30-day returnsFlynn focuses on the issue of collective responsibility as a particularly apt test-case for assessing any proposed union of existentialist and Marxist ...Missing: collectivism | Show results with:collectivism
  29. [29]
    Jean-Paul Sartre: between existentialism and Marxism | Red Flag
    Jun 19, 2021 · The Critique was an attempt to rejuvenate what Sartre saw as the genuine, critical spirit of Marxism, using insights drawn from existentialism.
  30. [30]
    Lesson 4: Why God Created People (Genesis 1:26-31) | Bible.org
    Aug 22, 2013 · Expository study of Genesis: God created people to reflect His image, to rule over creation, and to reproduce godly offspring.Missing: essence | Show results with:essence
  31. [31]
    What is the purpose of man, according to the Bible? | GotQuestions.org
    Dec 12, 2022 · ... God created man and that He created him for His glory. Therefore, the ultimate purpose of man, according to the Bible, is simply to glorify God.Missing: essence | Show results with:essence
  32. [32]
    What Does It Mean to be Created in the Image of God? - Aish.com
    Sep 11, 2024 · A kabalistic look at the essence of being human. The Torah describes human beings as being created “in the image of God.”
  33. [33]
    Understanding Tawhid: Tawhid is innate human nature
    Aug 22, 2016 · The Quran explains that Tawhid is in the very essence of Man when he was created. The Imams in numerous hadiths have confirmed that the meaning ...
  34. [34]
    7 Facts About Tawheed Meaning in Islam, Are You Missing One?
    May 28, 2025 · Tawheed means the absolute oneness of Allah in His essence, attributes, and actions. It rejects any form of polytheism or associating partners ...Missing: view tawhid
  35. [35]
    Religion and Morality in Western Philosophy
    Sep 27, 2006 · Sartre said that when people believed God made human beings, they could believe humans had a God-given essence; but now that we do not ...
  36. [36]
    [PDF] Essentialism in Aristotle - University of Washington
    to exist, now correctly described, of course, as a corpse. So being a man does not appear to be an Aristotelian essence; and it seems easy to generalize on ...Missing: precedes | Show results with:precedes
  37. [37]
    [PDF] ESSENCE AND END IN ARISTOTLE
    An eye, for ex- ample, exists for the sake of seeing—that is its final cause—whereas its essence or formal cause is sight. Sight is a power, seeing is an.Missing: precedes | Show results with:precedes
  38. [38]
    [PDF] Thomas Aquinas On Being and Essence - Fordham University Faculty
    That is to say, if something is in a genus or a species, then its existence must be distinct from its essence, whence if the existence of something is not ...
  39. [39]
    Existence and Essence in Our Time - - Thomas Harper -
    Jun 5, 2019 · In this line of thinking, a thing first exists, and then due to its form of existing, it has essence bestowed upon it by observers. This is ...<|separator|>
  40. [40]
    Free Will and Neuroscience: From Explaining Freedom Away to ...
    ... Libet has contributed to seeing free will as an illusion: this view seemed to be reliably supported by science, and in particular by neuroscience. Recent ...
  41. [41]
    How Neuroscience Disproved Free Will and Then Proved It Again
    Feb 13, 2024 · This study has been taken to be the key neuroscientific evidence that we truly don't have free will. Libet himself later came to believe that ...
  42. [42]
    Why neuroscience does not disprove free will - ScienceDirect.com
    Neuroscience does not disprove our intuition of free will. Decision models of Libet-type experiments are compatible with conscious free will.
  43. [43]
    Are Some Destined to Be Smart? | Psychology Today
    Oct 2, 2025 · Twin studies reveal strong heritability, showing correlations of .70–.80 in IQ for twins raised apart. That means the environment still ...
  44. [44]
    Insights from Recent Gene Discoveries into Human Personality and ...
    Twin and family studies have long suggested a substantial genetic component underlying personality traits, with heritability estimates ranging from 30% to 60% ...Missing: IQ | Show results with:IQ<|separator|>
  45. [45]
    The new genetics of intelligence - PMC - PubMed Central
    One of the most interesting developmental findings about intelligence is that its heritability as estimated in twin studies increases dramatically from infancy ...
  46. [46]
    Genetics and intelligence differences: five special findings - Nature
    Sep 16, 2014 · (i) The heritability of intelligence increases from about 20% in infancy to perhaps 80% in later adulthood. (ii) Intelligence captures genetic ...
  47. [47]
    Beyond Heritability: Twin Studies in Behavioral Research - PMC - NIH
    Twin studies help identify causal environmental effects by controlling for genetic and shared environmental influences, acting as quasi-experimental tests.
  48. [48]
    Evolutionary accounts of human behavioural diversity - PMC
    (d) Evolutionary psychology stresses the impact of genetic inheritance on human behaviour (thick arrows from G to P), the relatively weak influences of socially ...
  49. [49]
    How Hardwired Is Human Behavior? - Harvard Business Review
    Evolutionary psychology, in identifying the aspects of human behavior that are inborn and universal, can explain some familiar patterns.
  50. [50]
    Meta-analysis of the heritability of human traits based on fifty years ...
    May 18, 2015 · We report a meta-analysis of twin correlations and reported variance components for 17,804 traits from 2,748 publications including 14,558,903 ...
  51. [51]
    The genetics of human personality - PMC - NIH
    Twin and family studies have demonstrated that personality traits are moderately heritable, and can predict various lifetime outcomes, including psychopathology ...
  52. [52]
    The Heritability of Personality is not Always 50%: Gene-Environment ...
    Twin studies of personality are consistent in attributing approximately half of the variance in personality to genetic effects.
  53. [53]
    The five factor model of personality and heritability
    While it has been established that personality traits are partially heritable, with studies consistently showing that 40% to 60% of individual differences in ...
  54. [54]
    Twin Studies in Personality Research - Wiley Online Library
    Sep 18, 2020 · Twin studies are used by behavioral geneticists to investigate the heritability of traits, or the proportion of differences in a trait that ...
  55. [55]
    The Distinction Between Innate and Acquired Characteristics
    Aug 4, 2009 · Innate behavior was thought to be composed of identifiable units – 'fixed action patterns' – whose evolution could be studied like that of a ...1. Outline Of Scientific... · 2. Philosophical Diagnoses... · 3. Revisionist And...
  56. [56]
    The influence of evolutionary history on human health and disease
    Jan 6, 2021 · Nearly all genetic variants that influence disease risk have human-specific origins; however, the systems they influence have ancient roots.
  57. [57]
    Surprising Genetic Evidence Shows Human Evolution in Recent ...
    May 20, 2025 · Mounting evidence from genome studies indicates that, contrary to received wisdom, our species has undergone profound biological adaptation ...
  58. [58]
    Free will debates: Simple experiments are not so simple - PMC
    Aug 30, 2010 · Libet claims that humans cannot consciously initiate a choice, because the motor cortex “readiness potential” begins to develop 400 ms before a ...<|separator|>
  59. [59]
    The Libet Experiment & Question of Free Will - Sprouts Schools
    Feb 26, 2024 · Libet himself did not interpret his experiment as evidence that our decisions are predetermined. He said: “The tendency to press a button may be ...
  60. [60]
    Why Libet's Studies Don't Pose a Threat to Free Will | Oxford Academic
    It is argued that neither Libet's data nor the reasoning that follows strongly support the fairly radical claims about free will that many have supposed.
  61. [61]
    Study Tackles Neuroscience Claims to Have Disproved 'Free Will'
    Mar 12, 2018 · Libet found brain activity preceded a person's actions before the person decided to act. Later studies, using various techniques, claimed to ...
  62. [62]
    Neuroscientists Should Set a High Bar for Evidence against Free Will
    Mar 4, 2025 · Neuroscience research claiming to question the existence of free will may have been misinterpreted.
  63. [63]
    The collapse of the wave function as the mediator of free will in ...
    Free will and neuroscience: from explaining freedom away to new ways of operationalizing and measuring it. Front. Hum. Neurosci. 10:262. doi: 10.3389/fnhum ...
  64. [64]
    Scientist, after decades of study, concludes: We don't have free will
    Oct 19, 2023 · Most neuroscientists believe humans have at least some degree of free will. So do most philosophers and the vast majority of the general ...
  65. [65]
    Did Evolution Give Us Free Will? (Continued)
    Mar 5, 2025 · I have been reviewing neuroscientist Kevin Mitchell's book Free Agents: How Evolution Gave Us Free Will. See Part 1 here.
  66. [66]
    Do we have (in)compatibilist intuitions? Surveying experimental ...
    Apr 22, 2024 · So far, neither natural compatibilism nor natural incompatibilism are definitely supported by empirical studies. This article surveys and ...
  67. [67]
    Why the Classical Argument Against Free Will Is a Failure
    Jan 27, 2022 · Despite bold philosophical and scientific claims, there's still no good reason to doubt the existence of free will.
  68. [68]
    free will News Research Articles
    Neuroscience Doesn't Undermine Free Will After All. A new study brings into question conventional theories of the neuroscience of free will. Researchers ...
  69. [69]
    Analysis of Jean-Paul Sartre 's Nausea - Literary Theory and Criticism
    Aug 2, 2023 · Roquentin finally makes Sartre's famous existential statement: “existence precedes essence.” This aphorism entails that the individual is ...<|separator|>
  70. [70]
    Nausea Section 4 Summary & Analysis | SparkNotes
    Roquentin's Nausea is thus the result of Sartre's belief that "existence precedes essence." Anything used to describe an object (it essence) is not only ...
  71. [71]
    Jean-Paul Sartre and No Exit Background - SparkNotes
    Sartre defined existentialism as the doctrine that "existence precedes essence." He distinguished between inanimate objects, or a "being-in-itself," and ...
  72. [72]
    Sartrean Existentialism: Specific Principles - CliffsNotes
    What does this mean, that existence precedes essence? It means that man exists first, finds himself, ventures into the world, and then defines himself. . . .
  73. [73]
    THE ANALYSIS OF SARTRE'S 'ESSENCE' AND 'SUBJECTIVITY' IN ...
    This study shows that Disney Pixar'sSoul does portray Sartre's 'existence precedes essence' through Joe's life – human beings have no fixed preordained essence ...Missing: media | Show results with:media
  74. [74]
    Why Camus Was Not An Existentialist | Issue 115 - Philosophy Now
    In simple terms, Sartre believed that existence precedes essence; Camus however contended that essence precedes existence. ... The Philosophy of Film Noir.<|separator|>
  75. [75]
    Existential Theory: History, Beliefs, Uses, and More - Psych Central
    Jun 14, 2022 · What are the main ideas of existentialism? · Existence precedes essence · Freedom · Absurdity · Anxiety · Authenticity · Abandonment.
  76. [76]
    Existential Psychology — Seattle Anxiety Specialists - Psychiatry ...
    ... existence precedes essence", grappling with religious ideas that were ... Applications of Existential Psychology. Existential psychology continues to be ...
  77. [77]
    Sartre's Existentialism in the Age of Artificial Intelligence – Analysis
    Nov 20, 2024 · In the age of AI, Sartre's existentialism serves as both a cautionary tale and a call to action, urging humanity to wield its freedom ...