Robert A. Heinlein

"Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy - in fact, they are almost incomp…"

"May you live as long as you wish and love as long as you live."

"Some people insist that 'mediocre' is better than 'best.' They delight in clipping wings because they themselves can't fly. They despise brains because they have none."

"Precedent is merely the assumption that somebody else, in the past with less information, nevertheless knows better than the man on the spot."

"Like many a man before him, he found himself forced into a lie because the truth simply would not be believed."

"You're in bad shape when your emotions force you into acts which you know are foolish."

"“The trouble with you youngsters,” Joe said, “is that if you can’t understand a thing right off, you think it can’t be true. The trouble with your elders is, anything they didn’t understand they reint…"

"Hans had courage to burn. If he had been willing to knuckle under to the Nazis he would have stayed at Kaiser Wilhelm Institute. But Hans was a scientist. He wouldn’t trim his notion of truth to fit p…"