Consider two people. The first grows up in a stable, loving home, attends good schools, develops good judgment, and becomes a responsible, generous adult. The second grows up in a chaotic household, experiences trauma and neglect, develops poor impulse control, and makes destructive choices throughout their life.
Now ask: how much credit does the first person deserve? How much blame does the second?
Most of us, when pressed, feel some unease. The first person's virtues were significantly shaped by circumstances they did nothing to earn. The second person's failures were significantly shaped by circumstances they did nothing to deserve. And yet moral intuition — and most legal and social systems — treats them as fully responsible for who they are.
This tension is the heart of what philosophers call the problem of moral luck.
Nagel and Williams: Two Philosophers, One Problem
The problem was formalized in a pair of influential papers published simultaneously in 1976 by Thomas Nagel and Bernard Williams. Both argued that our ordinary moral practices are deeply and perhaps irresolvably in tension with ourselves.¹
Nagel identified several distinct varieties of moral luck — ways in which factors outside our control influence our moral assessments. There is resultant luck: two drunk drivers, one of whom happens to hit a child who runs into the road, are morally assessed very differently despite making the same reckless choice. There is circumstantial luck: the person who would have collaborated with a genocidal regime, but was born in the wrong time and place to face that test, is not blamed — even though their character may not have been equal to it. And there is constitutive luck: the luck of having the temperament, upbringing, and dispositions that you have.
This last category is the most unsettling. We praise and blame people for their character — their courage, their kindness, their honesty, their cruelty. But character is substantially shaped by factors no one chose. How far back does responsibility really reach?
The Kantian Response: Control Matters
The dominant tradition in Western ethics — especially in its Kantian form — holds that moral assessment should track what is within a person's rational control. Kant's own view was that the only thing unconditionally good is the good will: the intention to act from duty, which is entirely the agent's own regardless of circumstances or outcomes.²
On this view, moral luck shouldn't exist. What we are genuinely responsible for is our intentions, our choices, our commitments. The drunk driver who happens to hit someone is guilty of the reckless choice, not the bad outcome — the outcome just made visible what was already blameworthy in the decision.
This is a tidy response. But it doesn't quite hold under pressure. Because even intentions and choices are shaped by prior constitutive factors. The person with greater self-control, greater capacity for rational deliberation, greater emotional regulation — these too are, at least partly, luck.
Williams: The Retrospective Rewrite
Williams pressed this intuition harder than Nagel. He was particularly interested in what he called agent-regret — the special kind of guilt a person feels when they cause harm unintentionally.³
The driver who hits the child feels something different than what a bystander feels, even if both regret the event equally. The driver's regret is bound up with the fact that their hands did it, even if their intentions were blameless. Williams thought this asymmetry — the special moral weight we attach to what we actually cause — was not a confusion to be dissolved but a genuine feature of moral life.
His conclusion was uncomfortable: our moral lives are partly constituted by factors outside our control, and any account of ethics that pretends otherwise is falsifying the human situation.
The notion of pure autonomous moral agency — the self who stands free of luck — may be less a philosophical achievement than a philosophical myth.
Why It Matters Beyond the Seminar Room
The problem of moral luck is not merely academic. It has direct implications for how we think about punishment, poverty, success, and empathy.
Criminal justice systems generally require that punishment track culpability. But if constitutive luck significantly shapes who commits crimes — and substantial evidence from developmental psychology, neuroscience, and sociology suggests it does — then retributive punishment frameworks face deep philosophical pressure.⁴
Attitudes toward economic success and failure are similarly complicated. The entrepreneur who succeeds often did work hard and make good decisions. But they also launched in favorable economic conditions, benefited from networks they didn't build, and possessed temperamental traits forged in circumstances they didn't choose.
This is not an argument for fatalism or for dissolving all moral distinctions. It is an argument for holding praise and blame more lightly — not eliminating them, but qualifying them with awareness of how much we cannot see.
Moral luck does not let anyone off the hook. But it does complicate the confidence with which we point the finger — and that complication may itself be a form of moral progress.
Sources ¹ Thomas Nagel — Moral Luck, in Mortal Questions (1979), Cambridge University Press ² Immanuel Kant — Groundwork of the Metaphysics of Morals, trans. Mary Gregor (1998), Cambridge University Press ³ Bernard Williams — Moral Luck, in Moral Luck: Philosophical Papers 1973–1980 (1981), Cambridge University Press ⁴ Michael Moore — Placing Blame: A Theory of the Criminal Law (1997), Oxford University Press
