Sustainable development is not a choice, but a responsibility.
可持续发展不是选择，而是责任。
【释义】心境不清明，就无法领悟正道；志向不坚定，就无法成就事业。
数学中最激动人心的时刻是当你意识到两个看似不相关的领域有着深刻的联系时。
No, not rich. I am a poor man with money, which is not the same thing.
To see is to forget the name of the thing one sees.
有些书最好的部份仅止于封面与书背。