Assasination on the scaffold is the worst form of assasination, because there it is invested with the approval of society.

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.

When you read a biography remember that the truth is never fit for publication.

What a man believes may be ascertained, not from his creed, but from the assumptions on which he habitually acts.

Beware of false knowledge; it is more dangerous than ignorance.

Unless comedy touches me as well as amuses me, it leaves me with a sense of having wasted my evening. I go to the theatre to be moved to laughter, not to be tickled or bustled into it.

Forgive him, for he believes that the customs of his tribe are the laws of nature!