Who said “No man really knows about other human beings. The best he can do is to suppose that they…”?

“The end of the human race will be that it will eventually die of civilization.”

“The Goddamn human race deserves itself, and as far as I'm concerned it can have it.”

“One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man.”

“Man is more interesting than men. God made him and not them in his image. Each one is more precious than all.”

“It's funny. All you have to do is say something nobody understands and they'll do practically anything you want them to.”

“No one wants advice, only corroboration.”

“Time is the only critic without ambition.”

“Give a critic an inch, he'll write a play.”

“Writers are a little below clowns and a little above trained seals.”

“The discipline of the written word punishes both stupidity and dishonesty.”

“A journey is like marriage. The certain way to be wrong is to think you control it.”