我们在Facebook上试图做的事情，就是帮助人们更有效地连接和沟通。
The thing that we are trying to do at Facebook, is just help people connect and communicate more efficiently.
可持续性不仅仅是植树，而是在正确的地方种植正确的树木，并确保它们世代繁茂。
The dialogue between science and society must be ongoing.
坚持很重要， 永远不要放弃，除非不得已。