The secret of happiness is to admire without desiring.

The secret of happiness is this: Let your interests be as wide as possible and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile.

The secret of being miserable is to have leisure to bother about whether you are happy or not.

Part of the secret of success in life is to eat what you like and let the food fight it out inside.

I have unclasp'd to thee the book even of my secret soul.