The mere act of believing that some wrongful course of action constitutes an advantage is pernicious.

As in the case of wines that improve with age, the oldest friendships ought to be the most delightful.

So it may well be believed that when I found him taking a complete holiday, with a vast supply of books at command, he had the air of indulging in a literary debauch, if the term may be applied to so honorable an occupation.

What one has, one ought to use: and whatever he does he should do with all his might.

Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.

It is as hard for the good to suspect evil, as it is for the bad to suspect good.

There is no opinion so stupid that it can't be expressed by some philosopher.