"The unexamined life is not worth living."

他的花朵曾经告诉他，自己是宇宙间仅有的一种花；可是仅仅在这座花园里，就有五千朵和她一模一样的花！

I've learned that you can't control what other people think of you, but you can control what you think of yourself.

乐观，悲观，去他的；我们要让它发生。我发誓，我一定要让它成功。

给定系统中的酸和碱不是绝对的，而是相互关联的。

The beauty of physics lies in its ability to explain the complex with simple principles.

Liberty consists in doing what one desires.