我们安然入睡，是因为粗野的人们在夜晚准备好对伤害我们的人施以暴力。

我们生活中最美好的时刻不是被动的、接受的、放松的时刻……最美好的时刻通常发生在一个人自愿努力完成一项困难而有价值的事情时，身体或精神被拉伸到极限。

在商业中，适应性与战略同样重要。

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.