The only thing that is constant is change.
国家本质上是具有侵略性和扩张性的。
Innovation is not a slogan, but a continuous breakthrough in every detail.
失败是有教益的。真正思考的人从失败中学到的东西和从成功中学到的一样多。
The study of mathematics is like air or gravity – it’s everywhere, even if you don’t see it.