The famous sayings about studying diligently and hard are as follows:

1. Black-haired people don’t know how to study early, white-haired people regret studying late.

2. Wealth must come from hard work, and a man must read five cars of books.

3. Select and list them one by one. Learning can be obtained through hard work. Thousands of books on the window are enough for three winters. Who can laugh with an empty belly?

4. If you are very talented, diligence will make your talent more perfect; if your talent is mediocre, diligence will make up for your flaws.

5. Knowledge is a sweet fruit growing from a bitter root.

6. Scientific research is like drilling on a wooden board. Some people like to drill thin ones; but I like to drill thick ones.

7. Nothing is easier to waste than time, and nothing is more worth cherishing. If there is no time, we will accomplish nothing in the world.

8. Each of us has a key to self-taught, which is: ideals, diligence, perseverance, humility and scientific methods.

9. If you don’t study well, you will suffer from unclear ideas; if you don’t learn enough, you will suffer from it.

10. The lights are on at three o'clock and the chicken is on the clock at two o'clock. It's the time when men are studying. Young people don't know how to study diligently early, and old people regret studying late.

11. Diligence can play its role; if your intelligence is mediocre, if you are talented. Diligence makes up for what it lacks.

12. Whoever puts effort into dressing up and hairstyle will not have the energy to devote to studying; whoever only pays attention to modifying the beauty of the outside will not be able to obtain the inner beauty.

13. Genius is 99% perspiration and 1% inspiration.

14. Without extra diligence, there will be neither talent nor genius.

15. Any outstanding achievements I have made in science are only achieved due to long-term thinking, patience and diligence.