I wanted to kill myself. I would have done it, too, if I had owned a gun. I was considering the gruesome alternatives - pills, slitting my wrists with a razor blade, jumping off a bridge - when another student called to ask me a detailed question on relativity. There was no way, after fifteen minutes of thinking about Mr. Einstein, that suicide was still a viable option. Divorce, certainly. Celibacy, highly likely. But death was out of the question. I could never have prematurely terminated my love affair with physics.

All these worlds are yours, except Europa. Attempt no landings there.

Any teacher that can be replaced by a machine should be!

This is the first age that's ever paid much attention to the future, which is a little ironic since we may not have one.

I had fun, but I didn't really have anyone i particularly loved except for loving friends. But I have a certain amount of faith that it will come.

Is life worth living? Yes, so long As Spring revives the year, And hails us with the cuckoo's song, To show that she is here;

Es gibt noch ein anderes, besseres Leben.