A poet who reads his verse in public may have other nasty habits.

There comes a time in the life of every human when he or she must decide to risk ‘his life, his fortune and his sacred honor’ on an outcome dubious. Those who fail the challenge are merely overgrown children, can never be anything else.

Logic is a feeble reed, friend. "Logic" proved that airplanes can't fly and that H-bombs won't work and that stones don't fall out of the sky. Logic is a way of saying that anything which didn't happen yesterday won't happen tomorrow.

Abstract knowledge is always useful, sooner or later.

If I don’t start having service I’m going to swap you all for a dog and shoot the dog.

Heinlein's Rules for Writers Rule One: You Must Write Rule Two: Finish What Your Start Rule Three: You Must Refrain From Rewriting, Except to Editorial Order Rule Four: You Must Put Your Story on the Market Rule Five: You Must Keep it on the Market until it has Sold

Autobiography is usually honest but it is never truthful.