God has pitted you against a rough antagonist that you may be a conqueror, and this cannot be without toil
Self-conquest is the greatest of victories
You will conquer more surely by prudence than by passion
He is twice a conqueror, who can restrain himself in the hour of triumph
It is not enough to conquer; one must learn to seduce
You will hardly conquer, but conquer you must


On Anger: "For every minute you remain angry, you give up sixty seconds of peace of mind."
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human
On Friendship: "A crowd is not company; and faces are but a gallery of pictures; and talk but a tinkling cymbal, where there is no love."