Human ingenuity has given centuries to the goal of ensuring that the human body might move around at an even 68 degrees all year.

Not to forgive is to be imprisoned by the past, by old grievances that do not permit life to proceed with new business.

A day cannot live in infamy without the nourishment of rage. Let's have rage.

When man sends colonies into space, he will be able to mount moveable, sun-reflecting mirrors to simulate rhythms of day and night and even the terrestial seasons...But he doubtless will follow the longstanding American habit of thinking that outer space should, as much as possible, resemble Southern California.

Leaders make things possible. Exceptional leaders make them inevitable.

One can live with the thought of one's own death. It is the thought of the death of the words and books that is terrifying for that is the deeper extinction.

For now, we assume that self-evolving robots will learn to mimic human traits, including, eventually, humor. And so, I can't wait to hear the first joke that one robot tells to another robot.