如果你没有得到奇迹，你仍然可以成为别人的奇迹。

A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.

This is what we call love. When you are loved, you can do anything in creation. When you are loved, there's no need at all to understand what's happening, because everything happens within you.

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.