If the world were good for nothing else, it is a fine subject for speculation.

—William Hazlitt, 1823

To know all is not to forgive all. It is to despise everybody.

—Quentin Crisp, 1968

For sooner will men hold fire in their mouths than keep a secret.

—Petronius, c. 60

Secrecy lies at the very core of power.

—Elias Canetti, 1960