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.
我们决定在这十年间登上月球并实现更多，并非它们轻而易举，而正是因为它们困难重重。因为这个目标将促进我们实现最佳的组织并测试我们顶尖的技术和力量，因为这个挑战我们乐于接受，因为这个挑战我们不愿推迟，因为这个挑战我们志在必得，其他的挑战也是如此。
The more you see yourself as a teacher, mentor and coach, the more likely you're going to be successful in building your own enterprise.
因此，教学艺术无非是时间、科目和方法的巧妙安排。
数学家最好的工作往往来自于在别人看不到联系的地方发现联系。
Leadership means making tough decisions today that will benefit everyone tomorrow.
最好的投资不是投在创意上，而是投在背后的团队上。
我不害怕跌倒，因为我知道我会再次站起来。