教育艺术必须转变为建立在人性永恒规律上的科学。

我不必完美，我只需要做我自己。

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

被锁链束缚往往比自由更安全。

Philosophy is an ornament in prosperity, a refuge in adversity, and a provision in old age.