Philosophy stands in the same relation to the study of the actual world as masturbation to sexual love.

Perseus wore a magic cap that the monsters he hunted down might not see him. We draw the magic cap down over eyes and ears as a make-believe that there are no monsters.

Go on, get out - last words are for fools who haven't said enough. To his housekeeper, who urged him to tell her his last words so she could write them down for posterity.

The working men have no country. We cannot take away from them what they have not got

In a word, the free trade system hastens the social revolution. It is in this revolutionary sense alone, gentlemen, that I vote in favor of free trade.

The only antidote to mental suffering is physical pain.

The human being is in the most literal sense a political animal, not merely a gregarious animal, but an animal which can individuate itself only in the midst of society.