The quality of a play is the quality of its ideas.

Just do what must be done. This may not be happiness, but it is greatness.

It is necessary for the welfare of society that genius should be privileged to utter sedition, to blaspheme, to outrage good taste, to corrupt the youthful mind, and generally to scandalize one's uncles.

Those who admire modern civilization usually identify it with the steam engine and the electric telegraph.

I object to publishers: the one service they have done me is to teach me to do without them. They combine commercial rascality with artistic touchiness and pettishness, without being either good business men or fine judges of literature.

I work as my father drank.

From Mozart I learnt to say important things in a conversational way.