Nothing is more precious than time, so don't put off today until tomorrow.

Regret is an emotion that consumes the spirit. Regret is a bigger loss than loss and a bigger mistake than mistake, so don't regret it.

Regret is actually very painful, and I have absolute right to speak now.

Only now do I understand that it is useless to be reluctant, and what I can't get is illusory after all, just wasting my short youth.

6. If you don't listen to the old man, you will suffer.

7. Of all the criticisms, the greatest, most correct and most talented is time.

8. Good medicine tastes bitter and is good for illness, but advice when most unpleasant is good for action.

9. Reading and learning is to build your own thoughts and knowledge with the help of others' thoughts and knowledge.