Happiness is like those palaces in fairy tales whose gates are guarded by dragons: we must fight in order to conquer it.
Of all things which wisdom provides to make life entirely happy, much the greatest is the possession of friendship.
Morality is not the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.
Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for.