To understand chemistry at its most fundamental level, we must look at the dance of electrons in molecules.

世界是一个舞台，我们都是演员。

我不在乎你是国王还是清洁工，每个人都会和死神共舞。

我不是来取悦每个人的。我是来忠于自己的。

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