1. It is better to know ten things but not reach the ground than to know one thing but reach the ground. ——Dai Zhen's "Chronology of Mr. Dai Dongyuan"

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

3. Intensify your study, grasp the center, and prefer to be refined rather than miscellaneous, and it is better to be specialized rather than numerous.

——Zhou Enlai's "Selected Works of Zhou Enlai"