To a modern mind, it is difficult to feel enthusiastic about a virtuous life if nothing is going to be achieved by it.

Philosophy, from the earliest times, has made greater claims, and achieved fewer results, than any other branch of learning.

Of all forms of caution, caution in love is perhaps the most fatal to true happiness.

One eminently orthodox Catholic divine laid it down that a confessor may fondle a nun's breasts, provided he does it without evil intent.

Hegel's philosophy is so odd that one would not have expected him to be able to get sane men to accept it, but he did. He set it out with so much obscurity that people thought it must be profound. It can quite easily be expounded lucidly in words of one syllable, but then its absurdity becomes obvious.

Even when the experts all agree, they may well be mistaken.

I did not, however, commit suicide, because I wished to know more of mathematics.