1. It is difficult for a teenager to learn and grow old, and an inch of time is not light. 2, the young and the young don't work hard, and the boss is sad. 3, black hair does not know how to study hard early, white hair regrets reading late. 4, don't wait to see the teenager's head empty and sad. 5. Anyone who reads a useless book is a plaything. 6, playing people lose their morality, playing with things. 7. People who give up time, time also gives up on him. 8. Learning is like learning. If you don't make progress, you will retreat. 9. Books are tools to cultivate wisdom. 1. Genius is 99% diligence and 1% inspiration. Hope to adopt.