Idea / problem overview

Free will

An overview of changing accounts of human freedom and responsibility under fate, grace, natural causation, and moral law, with links into the arguments behind them.

Guiding question

What would it take for human beings to act freely and be responsible for what they do?

Current scope

The current historical sequence samples Stoic argument and practice, Augustine, Spinoza, Hume, and Kant, followed by a dated view of selected contemporary debates.

Current limits: It is not a comprehensive history of free will. Medieval Islamic and Christian debates, early modern theology, and many accounts of responsibility and agency remain outside the current sequence.

Highlight contributors in the atlas →

What persists?

These selections ask how action can belong to an agent when its conditions are not simply chosen. That question is a reading aid: responsibility, ethical independence and autonomy name different achievements across the records. Agreement that action has conditions does not by itself settle whether an agent could have done otherwise.

Free Will ·

What changes?

The Stoic problem sits inside a providential cosmos. Augustine’s disputes add sin and grace. Spinoza’s account identifies human beings with parts of one nature; Hume investigates the meanings and evidence attached to necessity; Kant asks about the authority of practical reason. These are distinct settings and argumentative tasks, not successive answers to one unchanged examination question.

Augustine of Hippo · Baruch Spinoza · Hume on Free Will · Kant’s Moral Philosophy ·

Historical perspectives

Each entry introduces one formulation; open its profile for the reasoning, objections, context, and primary readings. Dates locate contributions approximately. Only explicitly labelled relationships claim transmission, criticism, reformulation, revival, or comparison.

  1. Stoicism · Hellenistic and Roman Stoicism

    approximate

    Does a fated outcome render effort pointless?

    The lazy argument treats the outcome as independent of the action that brings it about. Co-fated events instead connect treatment with recovery. Practical reasoning can thus belong to the causal explanation of the result. This answers a challenge about the point of acting, which differs from a challenge about deserved punishment.

    Works or evidence: Cicero, On Fate 28–30, discussed in the specialist survey’s §2.8.

    Stoicism ;

  2. Chrysippus · Later third century BCE

    approximate

    Can assent be ours within a causal order?

    An action depends on the agent’s own constitution as well as the event that prompts it. The cylinder analogy separates the triggering condition from the disposition that explains the movement. This supplies an internal role for agency without removing it from fate. It leaves open whether causal ownership is enough for deserved blame.

    Works or evidence: Gellius, Attic Nights 7.2; reports of Chrysippus’s On Providence.

    Attic Nights, Book VII · 7.2, especially §§6–13; trans. J. C. Rolfe;

  3. Epictetus · Early second century CE

    approximate

    What must change for a vulnerable person to be free?

    Freedom is developed through the use of impressions and the discipline of desire. Making another person’s approval the condition of happiness hands that person power over one’s purpose. Epictetus therefore redirects evaluation toward one’s rational choices, while continuing to demand conduct appropriate to social relationships.

    Works or evidence: Handbook 1, 5, 30; Discourses 1.4.

    Enchiridion · §§1, 5, 30, 52; trans. Elizabeth Carter; Selections from the Discourses · On progress (1.4), On freedom (4.1); trans. George Long;

    transmission: Chrysippus — Discourses 1.4 explicitly discusses studying Chrysippus while distinguishing textual mastery from practical progress. This establishes engagement with his writings, not identity between their accounts of freedom. epictetus-discourses;

  4. Augustine of Hippo · c. 388–427 CE

    approximate

    How can willing the good depend on grace?

    Augustine defends voluntary wrongdoing against an explanation that makes evil an alien substance. His later disputes sharpen a different difficulty: a damaged will needs divine aid to love and do the good. Grace is not just information supplied to an otherwise sufficient chooser. Readers must distinguish his defense of choice from his account of the will’s healing.

    Works or evidence: On Free Choice; On Grace and Free Will 2–4, 16–17.

    Augustine of Hippo · §§1–2, 7.4–7.6; On Grace and Free Will · Chapters 2–4 and 16–17; trans. Peter Holmes and Robert Ernest Wallis;

  5. Baruch Spinoza · c. 1660–1677

    approximate

    Can freedom consist in understanding necessity?

    Spinoza denies an uncaused faculty of will. A thing is free insofar as its activity follows from its own nature, rather than being externally determined. Human freedom is consequently a matter of more adequate understanding and activity within nature. Turning a passion into an understood affection changes our relation to it; freedom does not require suspending the causal order.

    Works or evidence: Ethics I definition 7 and proposition 29; II proposition 48; V proposition 3.

    Baruch Spinoza · §§1–2; metaphysics and ethics; Ethics · I definition 7, I proposition 29; II proposition 48; V proposition 3; trans. R. H. M. Elwes;

  6. David Hume · 1748

    approximate

    Does necessity conflict with acting as we choose?

    Hume locates necessity in observed regularities and the inferences we draw from them. Liberty is the power to act according to one’s will, contrasted with constraint. Character-based explanations can support responsibility: without a stable connection between action and disposition, the action would not reveal what sort of person performed it. The agreement depends on accepting these accounts of necessity and liberty.

    Works or evidence: Enquiry Concerning Human Understanding VIII, parts I–II.

    Hume on Free Will · Liberty, necessity and moral responsibility; An Enquiry Concerning Human Understanding · Section VIII, parts I–II;

  7. Immanuel Kant · 1785–1788

    approximate

    What authorizes a rational agent to regard itself as free?

    Kant connects morality with autonomy: rational agents must regard themselves as giving a universal law rather than merely following inclination. Natural causation governs appearances, while practical deliberation takes a standpoint of freedom. This does not provide theoretical knowledge of an uncaused event. The difficult task is explaining why that practical standpoint has authority.

    Works or evidence: Groundwork III (Ak. 4:446–463); Critique of Practical Reason (Ak. 5:29–31).

    Kant’s Moral Philosophy · Autonomy and freedom; bibliography for Groundwork;

Contemporary discussion

Reviewed 2026-09-09 · next review 2027-09-09

Alternatives, sourcehood and responsibility

Contemporary debate includes compatibilist accounts of control through reasons, incompatibilist demands on alternatives or ultimate sourcehood, and skepticism about basic-desert responsibility. A central disagreement is whether responsibility needs an ability to do otherwise or instead an appropriate relation between action and the agent’s reasons and capacities. Cases involving manipulation test whether a responsive mechanism is enough.

Free Will;

What would an empirical result decide?

Psychological and neuroscientific work enters debates about decision-making, but relating an experimental task to morally significant control requires philosophical argument. Hume’s distinction between constraint and regularity remains a useful historical comparison, not a scientific result. This overview is a dated sampling of positions; it does not claim that experimental work has settled freedom.

Hume on Free Will; Free Will;

Sources

  1. Stoicism · Stanford Encyclopedia of Philosophy · §§1, 2.8–2.9, 4 · consulted 2026-09-09
  2. Augustine of Hippo · Stanford Encyclopedia of Philosophy · §§1–2, 7.4–7.6 · consulted 2026-09-09
  3. On Grace and Free Will · New Advent / Nicene and Post-Nicene Fathers · Chapters 2–4 and 16–17; trans. Peter Holmes and Robert Ernest Wallis · consulted 2026-09-09
  4. Baruch Spinoza · Stanford Encyclopedia of Philosophy · §§1–2; metaphysics and ethics · consulted 2026-09-09
  5. Ethics · Project Gutenberg · I definition 7, I proposition 29; II proposition 48; V proposition 3; trans. R. H. M. Elwes · consulted 2026-09-09
  6. Hume on Free Will · Stanford Encyclopedia of Philosophy · Liberty, necessity and moral responsibility · consulted 2026-09-09
  7. An Enquiry Concerning Human Understanding · Project Gutenberg · Section VIII, parts I–II · consulted 2026-09-09
  8. Kant’s Moral Philosophy · Stanford Encyclopedia of Philosophy · Autonomy and freedom; bibliography for Groundwork · consulted 2026-09-09
  9. Free Will · Stanford Encyclopedia of Philosophy · Contemporary debates about alternatives, sourcehood and responsibility · consulted 2026-09-09