Mathematics is not a deductive science—that's a cliché. When you try to prove a theorem, you don't just list the hypotheses and then start to reason. What you do is trial and error, experimentation, guesswork.

在网球中，心态是最重要的。

Every piece of plastic we produce should have a clear path to being reused or recycled.

"The past is never dead. It's not even past."

若要优美的嘴唇，要讲亲切的话。

事实是，每个人都会伤害你；你只需要找到那些值得你为之受苦的人。