1. Learning essence is not expensive. ..... It's better to know one thing than ten things. —— Dai Zhen: the chronicle of Mr. Yuan.

It is the worst thing to finish reading at a glance. zhen banqiao

3. An omnipotent person is omnipotent, and an omnipotent expert is omnipotent ... —— Tao Fen's Collected Works

4. Step up the study, seize the center, rather fine than miscellaneous, rather specialized than more. -Selected Works of Zhou Enlai

5. Reading is like mining, "panning for gold in the sand". —— Zhao Shuli