世界上充满了门，每一扇门都是一个选择。

"To define is to limit."

"The truth is rarely pure and never simple."

The challenge is not just to give people money but to understand how they make decisions under constraints.

真正的护城河是持续创造用户价值的能力。

热闹荣华的光景，过后即生空虚凄凉；而清淡脱俗的作为，才能历久而更有意味。