Agatha Christie

"If one sticks too rigidly to one's principles, one would hardly see anybody."

- Agatha Christie, author and playwright

George Jean Nathan

"Patriotism is often an arbitrary veneration of real estate above principles."

- George Jean Nathan, critic and editor

Groucho Marx

"Those are my principles, and if you don't like them... well, I have others."

- Groucho Marx, actor and comedian