The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

幸福不是没有问题，而是有能力处理问题

The thing that we are trying to do at Facebook, is just help people connect and communicate more efficiently.

真正的企业家精神在于不断挑战现状，寻找新的机会。

生活中最好的事情往往是意想不到的。