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.
The truth is often uncomfortable, but it is necessary.
在任何事情中，都存在一个我们无法逾越的界限。
The power of the team is greater than the individual, only cooperation can create miracles.
能量守恒定律是经验结果的概括。