What Is Ultimate Responsibility? Kane, Basic Desert, and the Self

Direct Answer

Ultimate responsibility is the condition an agent must meet to be responsible for an action "in the ultimate sense": the action's causal origins must trace back to the agent herself, and not to factors beyond her control such as genes, upbringing, or the laws of nature. Robert Kane, who made the notion central to contemporary philosophy, defines it as the requirement that the agent be "the ultimate creator and sustainer of her own ends and purposes" — the source of the springs of action, not merely their vehicle.

The idea runs deep. When we blame someone, we assume more than that they caused the harm; we assume that they are the appropriate object of that blame — that they could answer for it, that it is properly theirs. If every feature of the agent were fixed by causes she never chose, then her action would be hers in a merely possessive sense: it would flow through her, but she would not be its origin. Ultimate responsibility is the attempt to say what it takes for an action to be genuinely owned.

Historical Context

The notion is implicit in Kant's moral philosophy. For Kant, moral responsibility presupposes autonomy: the rational will gives itself its own law, and an agent acts freely when it acts from that self-given law rather than from alien causes. Because the moral law applies to us, we must be capable of self-determination — of being the origin of our actions in a way that no merely natural cause could be.

Kane developed the modern theory in The Significance of Free Will (1996). He argued that libertarianism is best understood not merely as a demand for alternative possibilities but as a demand for ultimate responsibility: the agent must be responsible for anything that is a sufficient cause of her action, including her own character and ends. This means some of her formative choices — self-forming actions — must themselves be undetermined, or responsibility recedes infinitely into the past. The skeptics, notably Derk Pereboom, accept Kane's definition but draw the opposite conclusion: since no agent could be the ultimate origin of her character, ultimate responsibility is impossible, and the retributive practices built on it should be abandoned.

Key Concepts

Ultimate responsibility (UR). An agent is ultimately responsible for an action if she is responsible for anything that is a sufficient cause (or reason) of it, including her character, motives, and the choices that formed them.

Self-forming actions (SFAs). Undetermined moments of inner conflict in which the agent's effort settles which of several open possibilities is realized; SFAs are the "bootstrap" by which agents become the sources of their own character.

Basic desert. The claim that an agent deserves blame or punishment simply because she performed a wrong action — desert "in the basic sense," for its own sake, not merely for forward-looking reasons like deterrence or rehabilitation.

Regress problem. If every sufficient cause of an action lies outside the agent's control, responsibility regresses indefinitely; ultimate responsibility requires stopping the regress at the agent.

Sourcehood. The condition that the action originate in the agent; modern incompatibilists often treat sourcehood as more fundamental than the ability to do otherwise.

Philosophical Perspectives

Kane's defense of ultimate responsibility runs through the self-forming action. When you face a conflict between, say, moral duty and self-interest, you try both: the effort to do right and the temptation to take the easy path. Because these efforts are undetermined, the outcome is not fixed by prior states — yet it is fixed by your own struggle, which is you. By choosing, you form the self that acts henceforth. Kane argues this gives us ultimate responsibility without positing the mysterious "agent causation" of older libertarianism.

Pereboom's hard incompatibilism turns the same structure into an objection. If a choice is undetermined, then whether it comes out one way or the other is not settled by the agent's prior reasons and character — it is, from the agent's own perspective, a matter of luck. So indeterminism does not restore authorship either. Pereboom concludes that ultimate responsibility is impossible on both horns of the dilemma, and that "basic desert" blame and retributive punishment are unjustified.

Compatibilists offer a third response: reject the very idea that responsibility requires ultimate origins. Daniel Dennett argues that responsibility is a forward-looking practice of managing behavior — we hold people responsible because doing so shapes better futures — and that this practice needs no metaphysical guarantee that the agent created her own character. What matters is that the agent can respond to reasons, and that is a fact about her present capacities, not about her causal ancestry.

Modern Reflection

The notion of ultimate responsibility increasingly shapes public debate about criminal justice. If nobody is ultimately responsible in Kane's sense, the retributive rationale for punishment weakens; Gregg Caruso and others argue for a "public health" model of criminal justice oriented to prevention and rehabilitation. Neuroscience, by showing how strongly behavior is shaped by genes, early trauma, and neurochemistry, gives the skeptic's story empirical traction.

Yet the idea also resists elimination. Even in a deterministic world, we distinguish the murderer from the person with a brain tumor, the manipulated agent from the reasoned one; these distinctions track reasons-responsiveness, and they survive skepticism about ultimacy. The philosophical question is whether "ordinary" responsibility is enough, or whether our practices secretly depend on the ultimacy that Kane describes. The debate remains open — and it is one of the most consequential in moral philosophy.

Related Thinkers

• Kant — autonomy as the ground of moral responsibility
• Daniel Dennett — compatibilist critique of ultimacy
• David Hume — responsibility tied to character, not ultimate origins
• William James — effort and the open future

Related Quotes

• "The will is a law unto itself: autonomy is the ground of dignity." — Kant, Groundwork of the Metaphysics of Morals
• "To be ultimately responsible, agents must be responsible for anything that is a sufficient cause of their action." — Robert Kane, The Significance of Free Will
• "We are responsible for what we are; responsibility is a practice of self-formation." — paraphrase of Hume

Sources

• Moral Responsibility — Stanford Encyclopedia of Philosophy
• Skepticism about Moral Responsibility — Stanford Encyclopedia of Philosophy
• Free Will — Stanford Encyclopedia of Philosophy
• Living Without Free Will — Derk Pereboom, Cambridge University Press

Further Learning

• Continue with What Is Moral Responsibility? and What Is Free Will?
• Study the Free Will topic and the Understanding Reality collection
• Read about ethics and metaphysics