Men are not governed by justice, but by law or persuasion. When they refuse to be governed by law or persuasion, they have to be governed by force or fraud, or both.

Most of my recent plays were written in the railway train between Hatfield and Kings Cross. I write anywhere, on the top of omnibuses or wherever I may be; it is all the same to me.

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.

Youth is just wasted on young people.

Your heart and your mouth wil be in two separate parts of your body if you again forget in whose presence you stand.

Youth is a wonderful thing. What a crime to waste it on children.

New opinions often appear first as jokes and fancies, then as blasphemies and treason, then as questions open to discussion, and finally as established truths.