抽象的目的不是模糊，而是创建一个新的语义层次，在这个层次上可以绝对精确。
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
We want to build a Google that works for everyone.
生活即教育。
"We are all in the gutter, but some of us are looking at the stars."
鱼和客人，三日发臭。
"It’s not about being perfect, it’s about being real."
