数学的美在于它允许我们从物理世界中抽象出来,专注于基本原理。
The beauty of mathematics is that it allows us to abstract away from the physical world and focus on the underlying principles.
过去是一个异国他乡;他们做事的方式不同。
The only thing worse than being talked about is not being talked about.
一次又一次地后悔到终身,还不如不做后悔之事而无后顾之忧。