“Marriage is an alliance entered into by a man who can't sleep with the window shut, and a woman who can't sleep with the window open.”

“Those who can do, those who can't teach.”

“The people who get on in this world are the people who get up and look for the circumstances they want, and if they can't find them, make them.”

“People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and if they can't find them, make them.”

“Better keep yourself clean and bright; you are the window through which you must see the world.”

“The man who writes about himself and his own time is the only man who writes about all people and all time.”

“No, really: I can't fight, I never could. I can't bring myself to dislike anyone enough.”