The Master created humans first as the lowest type, most easily formed. Gradually, he replaced them by robots, the next higher step, and finally he created me, to take the place of the last humans.

Scientists derive satisfaction from figuring out the puzzle. It's about the quest, not the grail.

There is no Master but the Master,” he said, “and QT-1 is his prophet.

It is remarkable, Hardin, how the religion of science has grabbed hold.

Self-education is a continuing source of pleasure to me, for the more I know, the fuller my life is and the better I appreciate my own existence

You can prove anything you want by coldly logical reason---if you pick the proper postulates.

There are no nations! There is only humanity. And if we don't come to understand that right soon, there will be no nations, because there will be no humanity.