"Whether you function as welders or inspectors, the laws of physics are implacable lie-detectors. You may fool men. You will never fool the metal. That’s all."

“Men may move mountains, but ideas move men.”

“Permanent justice is well worth a temporary offended protest, I can assure you, Lieutenant.”

“I may be small, but I screw up big because I’m standing on the shoulders of GIANTS.”

“Realize this, though. Half my genes run through your body, and my selfish genome is heavily evolutionarily pre-programmed to look out for its copies. The other half is copied from the man I admire most in all the worlds and time, so my interest is doubly riveted. The artistic combination of the two, shall we say, arrests my attention.”

“I wanted to give you a victory. But by their essential nature triumphs can’t be given. They must be taken and the worse the odds and the fiercer the resistance, the greater the honor. Victories can’t be gifts.”

“I’ve always felt that theists were more ruthless than atheists.”