Suffer a little, suffer a little, and then you can be the master. If you work hard all your life, you will get nothing-Zhang Heng

Industry is good at diligence, play is useless, and what you do is destroyed by thinking. -Han Yu

Genius is the infinite ability to work hard. -Carlisle

An idle youth, a poor age.

Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young.