My ideas are my whores.

If there are one hundred thousand damned souls for one saved soul, the devil has always the advantage without having given up his son to death.

There's a bit of testicle at the bottom of our most sublime feelings and our purest tenderness.

Isn't it better to have men being ungrateful than to miss a chance to do good?

If the weather is too cold or rainy, I take shelter in the Regence Cafe, where I entertain myself by watching chess being played. Paris is the world center, and this cafe is the Paris centre for the finest skill at this game.

A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

As long as the centuries continue to unfold, the number of books will grow continually, and one can predict that a time will come when it will be almost as difficult to learn anything from books as from the direct study of the whole universe. It will be almost as convenient to search for some bit of truth concealed in nature as it will be to find it hidden away in an immense multitude of bound volumes.