工程学是解决问题的，而不仅仅是让东西看起来漂亮。
Engineering is about solving problems, not just making things look pretty.
我们能留下的最好遗产是一个生生不息的遗产。
Either you repeat the same conventional doctrines everybody is saying, or else you say something true, and it will sound like it's from Neptune.
外交是一门没有永久朋友，只有永久利益的学科。
Labor economics is fundamentally about understanding people’s choices and constraints.
创新不仅仅是创造新事物，更是改进已有的事物。