我认为英雄是那些理解伴随自由而来的责任程度的人。
I think of a hero as someone who understands the degree of responsibility that comes with his freedom.
指事物之间相互依存、相互制约的关系。
The best books... are those that tell you what you know already.
The thing that we are trying to do at Facebook, is just help people connect and communicate more efficiently.
有些人即使没有存心做坏事，可事实上事情仍会做错，引起不幸的后果。凡是粗心大意、看不出别人的好心好意，而且缺乏果断的人，都一样能害人。
The best way to optimize a program is to optimize it.