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.

经验丰富的人读书用两只眼睛，一只眼睛看到纸面上的话，另一只眼睛看到纸的背面。

愉快是健康的最佳促进者。

无限中的无限。

我唯一能说的就是我一直努力保持谦逊。

我不是榜样，我只是一个成功的人。