每一次技术突破，都是对极限的挑战。

"The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter."

Old age is not interesting until one gets there.

Education is not preparation for life;education is life itself.

应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。