Progress doesnt come from early risers — progress is made by lazy men — Time Enough for Love

"Oh, I have strong opinions, but a thousand reasoned opinions are never equal to one case of diving in and finding out. Galileo proved that and it may be the only certainty we have."

"Never attempt to teach a pig to sing; it wastes your time and annoys the pig."

"A capsule description of most human “progress”: By the time you learn how, it’s too late."

"There’s no virtue in being old, it just takes a long time."

"Human beings hardly ever learn from the experience of others. They learn — when they do, which isnt often — on their own, the hard way."

"Security people always spy on their bosses; they can’t help it, it’s a syndrome that goes with the job."