我记得我的朋友约翰尼·冯·诺伊曼曾经说过，“用四个参数我可以拟合一头大象，用五个我可以让它摆动它的鼻子。”

Fearless is not the absence of fear. It's not being completely unafraid. It's having a lot of fears, but jumping anyway.

Human beings are not born once and for all on the day their mothers give birth to them, but life obliges them over and over again to give birth to themselves.

"It is worth living for, to find out what is true."

最成功的公司是那些为真实人群解决真实问题的公司。

我们不是在做产品，我们是在做服务。