We learn from experience that men never learn anything from experience.

Most married couples spend the whole day apart, the woman in the house, the man in the office or study or workshop.

What you are to do without me I cannot imagine.

No doubt it is easy to demostrate that property will destroy society unless society destroys it.

Opera is when a tenor and soprano want to make love, but are prevented from doing so by a baritone.

You do not settle whether an argument is justified by merely showing that it is of some use. The distinction is not between useful and useless experiments but between barbarous and civilized behaviour. Vivisection is a social evil because if it advances human knowledge, it does so at the expense of human character.

Happiness and beauty are by-products. Folly is the direct pursuit of happiness and beauty.