A man may not achieve everything he has dreamed, but he will never achieve anything great without having dreamed it first.

The intellectual life of man consists almost wholly in his substitution of conceptual order for the perceptual order in which his experience originally comes.

If we remembered everything, we should on most occasions be as ill off as if we remembered nothing. It would take us as long to recall a space of time as it took the original time to elapse, and we should never get ahead with our thinking. All recollected times undergo, accordingly, what M. Ribot calls foreshortening; and this foreshortening is due to the omission of an enormous number of facts which filled them.

I am only a philosopher, and there is only one thing that a philosopher can be relied on to do, and that is, to contradict other philosophers.

Serious development of the personality begins at the closet door.

We want all our friends to tell us our bad qualities; it is only the particular ass that does so whom we can't tolerate.

Our faith is faith in someone else's faith, and in the greatest matters this is most the case.