"Believe me! The secret of reaping the greatest fruitfulness and the greatest enjoyment from life is to live dangerously!"

"He who fights too long against dragons becomes a dragon himself; and if you gaze too long into the abyss, the abyss will gaze into you."

"And he whom you cannot teach to fly, teach to fall faster."

"Disgust with dirt can be so great that it prevents us from cleaning ourselves - from 'justifying' ourselves."

"There is not enough religion in the world to destroy the world's religions."

"Excessive productivity can bring the most gifted man almost to madness."

"The scornful nostril and the high head gather not the odors that lie on the track of truth."

"True friendship is never serene."

"There is no such thing as luck. There is only adequate or inadequate preparation to cope with a statistical universe."

"Strength is the outcome of need."

"Intelligence appears to be the thing that enables a man to get along without education. Education enables a man to get along without the use of his intelligence."

"I know you have come to kill me. Shoot, coward! You are only going to kill a man."