抽象的力量在于它允许我们忽略不相关的细节，专注于问题的本质方面。

每拖延一年，问题就会变得更难解决。

On pricing: "There are two kinds of companies， those that work to try to charge more and those that work to charge less. We will be the second."

这就是学习的意义。你突然以一种新的方式理解了你一生都理解的东西。

I'm not afraid to be vulnerable. That's where true strength comes from.

The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash.