Egotism is the tongue of vanity.
It is with happiness as with watches: the less complicated, the less easily deranged.
Whoever is not a misanthrope at forty can never have loved mankind.
He who leaves the game wins it.
A lover is a man who tries to be more amiable than it is possible for him to be.
It is said of a lonely man that he does not appreciate the life of society. This is like saying he hates hiking because he dislikes walking in thick forest on a dark night.