In a good mystery novel, the reader should feel both entertained and challenged throughout the reading process.

The true measure of success is leaving the land better than we found it.

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.

长江后浪推动前浪，世上新人层出不穷。

The most valuable resource any company has is its people.

教育不是为生活做准备；教育本身就是生活。