“Always listen to experts. They'll tell you what can't be done, and why. Then do it.”

“Allie, what do the Stars tell me to do? You know I don't understand the scientific part.”

“- I'm so busy doing what I must do that I don't have time for what I ought to do... and I never get a chance to do what I want to do!- Son, that's universal. The way to keep that recipe from killing you is occasionally to do what you want to do anyhow.”

“Once a man gets a reputation as a liar, he might as well be struck dumb, for people do not listen to the wind.”

“Customs tell a man who he is, where he belongs, what he must do. Better illogical customs than none; men cannot live together without them.”

“Everything is theoretically impossible, until it is done. One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.”

“I've found out why people laugh. They laugh because it hurts so much... because it's the only thing that'll make it stop hurting"...But that's not all people laugh at."Isn't it? Perhaps I don't grok all its fullness yet. But find me something that really makes you laugh sweetheart... a joke, or anything else- but something that gave you a a real belly laugh, not a smile. Then we'll see if there isn't a wrongness wasn't there." He thought. "I grok when apes learn to laugh, they'll be people.”