What are the facts? Again and again and again – what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history” – what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!

But if you didn't have more urgent things to do after supper [in boot camp], you could write a letter, loaf, gossip, discuss the myriad mental shortcomings of sergeants and, dearest of all, talk about the female of the species (we became convinced that there was no such creatures, just mythology created by inflamed imaginations - one boy in our company claimed to have seen a girl, over at regimental headquarters; he was unanimously judged a liar and a braggart).

My old man claimed that the more complicated the law the more opportunity for scoundrels.

A fool cannot be protected from his folly. If you attempt to do so, you will not only arouse his animosity but also you will be attempting to deprive him of whatever benefit he is capable of deriving from experience. Never attempt to teach a pig to sing; it wastes your time and annoys the pig.

Never force an idea; you'll abort it if you do.

It’s not enough to be able to lie with a straight face; anybody with enough gall to raise on a busted flush can do that. The first way to lie artistically is to tell the truth — but not all of it. The second way involves telling the truth, too, but is harder: Tell the exact truth and maybe all of it…but tell it so unconvincingly that your listener is sure you are lying.

Men rarely if ever dream up a god superior to themselves. Most gods have the manners and morals of a spoiled child.