有时候在生活中，你并不总是感到坚强，但这并不意味着你不坚强。

我们要建立一个不用钱的社会！

The best investment you can make is in yourself.

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.