There are three natural anaesthetics: Sleep, fainting, and death.

To think great thoughts you must be heroes as well as idealists.

A person of genius should marry a person of character.

The ultimate good desired is better reached by free trade in ideas [and] the best test of truth is the power of the thought to get itself accepted in the competition of the market.

Our test of truth is a reference to either a present or imagined future majority in favour of our view.

If wine tells truth - and so have said the wise, It makes me laugh to think how brandy lies!

Beware of making your moral staple consist of the negative virtues.