When I am abroad， I always make it a rule never to criticize or attack the government of my own country。 I make up for lost time when I come home.

学习是通过修改符号结构来提高性能的过程。

宇宙不仅比我们想象的更奇怪，而且比我们能够想象的更奇怪。

伦理不是进步的障碍，而是负责任进步的指南。

"The only thing that is truly powerful is the human spirit."

艺术是一种生存方式。