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.

The language of mathematics is universal, transcending cultural and linguistic barriers.

一旦某件事成为激情，动力自然就来了。

优良的马匹不好驾驭，但是可以载重物跑得很远；有才能的人不好驱使，但是可以使国君更加受人尊敬。