The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
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。
地球是广阔宇宙舞台上一个非常小的舞台。
Sustainability isn't just a buzzword—it's our responsibility to future generations.