A famous saying to keep doing one thing.

1. Do one thing slowly, but once you start, you must stick to it. -Prejudice

2. If you don't remember the book, you can remember it if you are familiar with it; Righteousness is not refined, but careful thinking can be refined; Only if you don't stand up, there is nothing you can do. -Zhu

If you have no determination, you will accomplish nothing. -Zhu

4. Will goal does not exist in nature, but in life.

As long as you have strong willpower, you will naturally have ability, intelligence and knowledge. -Dostoevsky