“I never make the mistake of arguing with people for whose opinions I have no respect.”
“I make it a point never to argue with people for whose opinion I have no respect.”
“Don't argue for other people's weaknesses. Don't argue for your own. When you make a mistake, admit it, correct it, and learn from it / immediately.”
“When I didn't argue he was satisfied he had persuaded me, and was not the first to make that mistake.”
“People have argued about God and government for centuries, and still they don't agree. But science, confronts opinion with facts.”
“The two worst strategic mistakes to make are acting prematurely and letting an opportunity slip; to avoid this, the warrior treats each situation as if it were unique and never resorts to formulae, recipes or other people's opinions.”