Most men of education are more superstitious than they admit - nay, than they think.

A man of spirit must not think of the word difficulty as so much as existing. Away with it!

The natural scientists of the previous age knew less than we do and believed they were very close to the goal: we have taken very great steps in its direction and now discover we are still very far away from it. With the most rational philosophers an increase in their knowledge is always attended by an increased conviction of their ignorance.

Virtue by premeditation isn't worth much.

Many things about our bodies would not seem to us so filthy and obscene if we did not have the idea of nobility in our heads.

The American who first discovered Columbus made a bad discovery.

Affectation is a very good word when someone does not wish to confess to what he would none the less like to believe of himself.