If you know the why, you can live any how.

In the dark, time feels different than when it is light.

The so called unconscious inferences can be traced back to the all-preserving memory, which presents us with parallel experiences and hence already knows the consequences of an action. It is not anticipation of the effects; rather, it is the feeling: identical causes, identical effects . . .

Evolution does not make happiness its goal; it aims simply at evolution and nothing else.

A person must have a good memory to keep the promises he has made. A person must have a strong imagination to be able to have pity. So closely is morality tied to the quality of the intellect.

It is certainly not the least charm of a theory that it is refutable.

Strong hope is a much greater stimulant of life than any single realised joy could be.