The capacity of the human mind for swallowing nonsense and spewing it forth in violent and repressive action has never yet been plumbed. - Robert A. Heinlein

Never tease an old dog; he might have one bite left.

He had let himself be bulldozed by the odds against him. He promised himself never again to pay any attention to the odds, but only to the issues.

“I don’t like cats.”
“Ever lived with a cat? No, I see you haven’t. How can you have the gall not to like something you don’t know anything about? Wait till you’ve lived with a cat, then tell me what you think. Until then...well, who told you you were entitled to an opinion?”
“Huh? Why, everybody is entitled to his own opinion!”
“Nonsense, Bub. Nobody is entitled to an opinion about something he is ignorant of. If the Captain told me how to bake a cake, I would politely suggest that he not stick his nose into my trade...contrariwise, I never tell him how to plan an orbit to Mars.”