The highest, most varied and lasting pleasures are those of the mind.

Optimism is not only a false but also a pernicious doctrine, for it presents life as a desirable state and man's happiness as its aim and object. Starting from this, everyone then believes he has the most legitimate claim to happiness and enjoyment. If, as usually happens, these do not fall to his lot, he believes that he suffers an injustice, in fact that he misses the whole point of his existence.

Hatred is an affair of the heart; contempt that of the head.

Every human perfection is allied to a defect into which it threatens to pass, but it is also true that every defect is allied to a perfection.

The real meaning of persona is a mask, such as actors were accustomed to wear on the ancient stage; and it is quite true that no one shows himself as he is, but wears his mask and plays his part. Indeed, the whole of our social arrangements may be likened to a perpetual comedy; and this is why a man who is worth anything finds society so insipid, while a blockhead is quite at home in it.

Life to the great majority is only a constant struggle for mere existence, with the certainty of losing it at last.

For an author to write as he speaks is just as reprehensible as the opposite fault, to speak as he writes; for this gives a pedantic effect to what he says, and at the same time makes him hardly intelligible.