Even in anger, do not reveal your friend's secrets. Menander
The face is the mirror of the mind, and eyes without speaking confess the secrets of the heart. Jerome
How can we expect others to keep our secrets if we cannot keep them ourselves? François de La Rochefoucauld
There are no secrets in the world. Thai Proverb
There are no greater prudes than those women who have their own dirty secrets to hide. Afghan Proverb
Conviviality reveals secrets. Latin Proverb