We might neglect our future selves because of some failure of belief or imagination.

- Derek Parfit

While reasons are provided by the facts,...rationality...depends instead on our beliefs. [...] [I]f I believe falsely that my hotel is on fire, it ma…

- Derek Parfit

No question is more sublime than why there is a Universe: why there is anything rather than nothing

- Derek Parfit

It is not enough to ask, 'Will my act harm other people?' Even if the answer is No, my act may still be wrong, because of its effects on other people…

- Derek Parfit

Normativity, I believe, is very different from motivating force. Neither includes, or implies, the other. Other animals can be motivated by their des…

- Derek Parfit

Criticizing himself again, Sidgwick writes: I am not an original man: and I think less of my own thoughts every day.

- Derek Parfit