The power of abstraction is crucial in computer science, allowing us to focus on the essential aspects of a problem.

A man who knows why he lives can endure any kind of life.

The greatest mistake you can make in life is to be continually fearing you will make one.

对付一个不自由的世界的唯一方法，就是变得如此绝对自由，以至于你的存在本身就是一种反抗。

研究的场所不是研究的对象。人类学家不研究村庄（部落、城镇、社区……）；他们在村庄里做研究。

The biggest risk to business is not taking any risks on sustainability.

You have to be willing to fail, to be wrong, to start over again with lessons learned.

Sometimes you put walls up not to keep people out，but to see who cares enough to break them down.