就算你要杀人，礼貌也伤不着你。
When you have to kill a man it costs nothing to be polite.
板块构造理论是地质学的统一理论。
The walls of the educational system must come down. Education should not be a privilege, so the children of those who have money can study.
Technology is nothing.What’s important is that you have a faith in people， that they’re basically good and smart， and if you give them tools， they’ll do wonderful things with them.
I write to remember, to not forget.
实现明天的唯一限制是我们今天的疑虑。
我的语言的界限意味着我的世界的界限。