Efficiency is doing things right; effectiveness is doing the right things.

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.

我见过未来，兄弟：那是谋杀。

Advice like these are not laws. They are like hats. If one doesn’t fit， try another.

沙漠教会你水的价值，沉默教会你言语的价值。

The beauty of physics lies in its ability to explain the complex with simple, elegant theories.

诗歌是一个可以说出不可言说之事的地方。