1. When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong. 2. The only way of discovering the limits of the possible is to venture a little way past them into the impossible. 3. Any sufficiently advanced technology is indistinguishable from magic.

Our own grandchildren may demonstrate that-sometimes- Gigantic is Beautiful.

If I didn't exist, I would have invented myself.

Can the synthesis of man and machine ever be stable, or will the purely organic component become such a hindrance that it has to be discarded?

It was one thing to have guessed it, another to have had that guess confirmed beyond possibility of refutation.

Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering.

. . . Moon-Watcher felt the first faint twinges of a new and potent emotion. It was a vague and diffuse sense of envy--of dissatisfaction with his life. He had no idea of its cause, still less of its cure; but discontent had come into his soul, and he had taken one small step toward humanity.