To look for a single general theory of how to decide the right thing to do is like looking for a single theory of how to decide what to believe.

The inclusion of consequences in the conception of what we have done is an acknowledgement that we are parts of the world, but the paradoxical character of moral luck which emerges from this acknowledgement shows that we are unable to operate with such a view, for it leaves us with no one to be.

If sub specie aeternitatis [from eternity's point of view] there is no reason to believe that anything matters, then that does not matter either, and we can approach our absurd lives with irony instead of heroism or despair.

What is it like to be a bat? What is it like for a bat to be a bat?

A theory of motivation is defective if it renders intelligible behaviour which is not intelligible.

If I thought that everything I did was determined by my circumstancse and my psychological condition, I woudl feel trapped.

Common sense doesn't have the last word in ethics or anywhere else, but it has, as J. L. Austin said about ordinary language, the first word: it should be examined before it is discarded.