1. Do not do evil because it is small, and do not do good because it is small. ——Chen Shou's "Three Kingdoms"

2. Familiar with three hundred Tang poems, and can recite them even if he can't compose them. ——Sun Zhu's "Preface to Three Hundred Tang Poems"

3. When the book is used, it will be regretted, and it will not be difficult until it has happened. ——Lu You

4. Ask the canal how clear it is? Because there is a source of living water. ——Zhu Xi

5. Read old books without getting tired of reading them a hundred times. If you read them carefully, you will know yourself. ——Su Shi