1. If you don’t sow in spring, you won’t grow in summer, you won’t be able to harvest in autumn, and you won’t be able to taste in winter.

2. The lights are on at three and the chicken is on at five, which is when men get angry. Black-haired people don't know how to study hard early, white-haired people regret studying late.

3. The happiest thing in the world is to fight for your ideals.

——Socrates