教育艺术必须转变为建立在人性永恒规律上的科学。

Change your life today. Don't gamble on the future, act now, without delay.

The teacher should not teach as if he were pouring knowledge into an empty vessel, but rather as if he were lighting a fire.

The story of chemistry is the story of humanity’s quest to understand the world.

我不会让世界沉默我的声音。