When he who hears does not know what he who speaks means, and when he who speaks does not know what he himself means, that is philosophy.

The history of human opinion is scarcely anything more than the history of human errors.

Ask a toad what is beauty....; he will answer that it is a female with two great round eyes coming out of her little head, a large flat head, a yellow belly and a brown back.

All sects are different, because they come from men; morality is everywhere the same, because it comes from God.

How inexpressible is the meanness of being a hypocrite! how horrible is it to be a mischievous and malignant hypocrite.

History is nothing but a pack of tricks that we play upon the dead.

A false science makes atheists, a true science prostrates men before the Deity