Everyone should study at least enough philosophy and belles-lettres to make his sexual experience more delectable.

The thoughts written on the walls of madhouses by their inmates might be worth publicizing.

One's first step in wisdom is to question everything - and one's last is to come to terms with everything.

The pleasures of the imagination are as it were only drawings and models which are played with by poor people who cannot afford the real thing.

To make astute people believe one is what one is not is, in most cases, harder than actually to become what one wishes to appear.

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

A clever child brought up with a foolish one can itself become foolish. Man is so perfectible and corruptible he can become a fool through good sense.