Being a detective is like being a scientist. You have to notice things other people don’t notice.

Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.

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。

We don't inherit the land from our ancestors; we borrow it from our children.