我们每个人都活在各自的过去中，我们花一分钟去认识一个人，一个小时去喜欢一个人，一天去爱上一个人，但是呢，却要花一辈子来忘记一个人。

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."

The beauty of a mathematical proof is in its elegance and the way it reveals the underlying truth in a clear and concise manner.

我们开采的每一吨煤炭都必须以最小的环境影响创造最大的价值。