"Society is like the air, necessary to breathe but insufficient to live on."

"He who seeks peace must remember that joy is found not in possessing, but in appreciating."

"It is possible to be a master in false philosophy, easier, in fact, than to be a master in the truth, because a false philosophy can be made as simple and consistent as one pleases."

"When men and women agree, it is only in their conclusions; their reasons are always different."

"Let me embrace thee, sour adversity, for wise men say it is the wisest course."

"I've put in so many enigmas and puzzles that it will keep the professors busy for centuries arguing over what I meant, and that's the only way of insuring one's immortality."

"It is a subtle truth that the spark of ambition becomes a blaze of accomplishment only through disciplined persistence."

"I am thankful for laughter, except when milk comes out of my nose."