"Nature is no sentimentalist—does not cosset or pamper us. We must see that the world is rough and surly, and will not mind drowning a man or a woman, but swallows your ship like a grain of dust."

"Every man is a consumer, and ought to be a producer."

"I am a man of contradictions."

"The health of the eye demands a horizon."

"Nothing is at last sacred but the integrity of your own mind."