Lesson · 4 min Stretch
Moral Luck
In one line We judge people by results that partly lie outside their control, and that is worth noticing.
Two drivers each look away from the road for a moment to read a message. One of them hits a child who runs out. The other reaches home safely. Their choices were the same, but we blame the first far more.
Philosophers call this moral luck. Kant held that a good will is good in itself, whatever it achieves. Yet we often judge by what happened, and what happens depends partly on luck: who ran into the road, who was tired that day.
The puzzle has no easy answer. Some hold that we should judge choices, not outcomes. Others say outcomes matter to how responsible we are. A sensible habit is to see both: judge the choice, and recognize the weight of the result.
Go deeper
The term came from Bernard Williams and Thomas Nagel, who wrote about it in 1976. Nagel listed four kinds: luck in outcomes, in circumstances, in character and in the causes behind our choices.
Kant’s view that a good will shines by its own light seems to rule luck out, yet Nagel argued that we still judge people by what they do and what happens, so the puzzle remains.
The two drivers
Two drivers check their phones at a red light that turns green. One rolls forward and taps a cyclist, who is hurt. The other drives on without incident.
Everyone condemns the first driver. Kit, a juror, wonders whether the second deserves any blame. She decides both chose carelessly, and that the cyclist’s injury makes the first driver’s case graver without making the second innocent.
Try this today Before judging someone harshly for an outcome, ask what part of it was out of their hands.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “Moral Luck.” https://quest2reason.com/learn/lesson/moral-luck. Accessed 13 November 2026.
Sources
- Immanuel Kant, Groundwork of the Metaphysics of Morals (1785), first section — The good will is good in itself, whatever it achieves. Paraphrased; nothing is quoted.
- Thomas Nagel, “Moral Luck”, in Mortal Questions (1979) — The two drivers, and the four kinds of luck: in outcomes, circumstances, character and causes. Paraphrased; nothing is quoted.
- Stanford Encyclopedia of Philosophy, “Moral Luck” — The puzzle of judging by outcomes.