A good system design is one that makes it easy to do the right thing and hard to do the wrong thing.
一个好的系统设计是使做正确的事情变得容易，做错误的事情变得困难。
Courage is not the absence of fear, but the triumph over it.
释义：人性都是怕死而追逐利益，这是天下共通之理。