There are very honest people who do not think that they have had a bargain unless they have cheated a merchant.

It is almost impossible systematically to constitute a natural moral law. Nature has no principles. She furnishes us with no reason to believe that human life is to be respected. Nature, in her indifference, makes no distinction between good and evil.

A simple style is like white light. Although complex, it does not appear to be so.

Those who have given themselves the most concern about the happiness of peoples have made their neighbors very miserable.

Men are not created to know, men are not created to understand ... and our illusions increase with our knowledge.

Man is a rational animal. He can think up a reason for anything he wants to believe.

Never lend books, for no one ever returns them