I once thought that if I could ask God one question, I would ask how the universe began, because once I knew that, all the rest is simply equations. But as I got older I became less concerned with how the universe began. Rather, I would want to know why he started the universe. For once I knew that answer, then I would know the purpose of my own life.

[I] must seek in the stars that which was denied [to me] on earth.

Time is not at all what it seems. It does not flow in only one direction, and the future exists simultaneously with the past.

There is one ray of hope. It seems to me that today the responsible leaders of the several peoples have, in the main, the honest will to abolish war.

When I was still a rather precocious young man, I already realized most vividly the futility of the hopes and aspirations that most men pursue throughout their lives.

Between the difficulties, one hides the opportunity

What we don't know is much more than what we know.