当你认为你理解了一个问题时,你就停止思考它了。
You can't manage what you don't measure.
世界是一个充满恐怖的地方,但也是美丽的地方。
Actions are right in proportion as they tend to promote happiness; wrong as they tend to produce the reverse of happiness.
La crainte suit le crime, et c'est son châtiment.