No man is sane who does not know how to be insane on proper occasions.
Henry Ward Beecher (1813-1887) American politician.
What frightens us most in a madman is his sane conversation.
Anatole France (1844-1924) French writer.
Show me a sane man and I will cure him for you.
Carl Gustav Jung (1875-1961) Swiss psychologist and psychiatrist.
Sanity is a madness put to good uses; waking life is a dream controlled.
George Santayana (1863-1952) American philosopher and poet.
An asylum for the sane would be empty in America.
George Bernard Shaw (1856-1950) Irish writer.