Writing down one thing you are grateful for each day is the cheapest possible therapy ever.

Great leaders don't create followers; they create more leaders.

You are never too old to set another goal or to dream a new dream.

我一直觉得技术应该为那些重要的工作作出贡献——如发现、组织、社交，这样用户就能做一些对他们来说愉悦的事情：生活和爱，不用成天和干巴巴的计算机较劲！那意味着我们的产品一定要实现协同工作。