To hold a pen is to be at war.
The only way to comprehend what mathematicians mean by Infinity is to contemplate the extent of human stupidity.
What is toleration? It is the prerogative of humanity. We are all steeped in weaknesses and errors: Let us forgive one another's follies, it is the first law of nature.
It is with books as with men: a very small number play a great part.
Friendship is the marriage of the soul, and this marriage is liable to divorce.
The man who says to me, "Believe as I do, or God will damn you," will presently say, "Believe as I do, or I shall assassinate you."