The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
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。
在计算机科学中，抽象是管理复杂性的关键。
The best investment you can make is in your team.
The true use of art is to make the invisible visible.
释义：即使官员清廉如水，也很难避免手下那些圆滑狡猾的属下所带来的麻烦或阻碍。