It is both whimsical and realistic, which is the unique style of scientists. -Guo Moruo
If a worker wants to do a good job, he must sharpen his tools first. -Confucius
The idea that success is easy to achieve without going through difficulties and twists and turns and making great efforts is just an illusion. -Mao Zedong
Please remember that the more difficult the environment is, the more you need firm perseverance and confidence, and the greater the harm of slacking off. -lev tolstoy
Our attention must be focused on the method itself, which is the real novelty that shakes the foundation of ancient civilization. -Whitehead
Use your time wisely! What do you want to understand? Don't go too far. -Goethe
industry is good at diligence, but poor at play; What is done is thought, but it is destroyed. -Han Yu
If you don't cut the jade, you won't be able to cut it. People don't learn and don't know. However, jade is a thing, and there is a constant Changde; Although it is not a tool, it is not harmful to jade. Human nature, because things will move, if you don't learn, you will be a villain instead of a gentleman, but you can't miss it. -Ouyang Xiu
Sweat and harvest are the most solid partners, and diligence and knowledge are the most beautiful lovers. -yizhi
the same is true of "difficulty". Facing the cliffs, you can't see a crack in a hundred years. But with an axe, you can advance inch by inch, and you have to advance foot by foot. If you keep accumulating, a leap will come and a breakthrough will follow. -Hua Luogeng
Mayor Mo Daoshao Hua is here, and his face is white and wrinkled. -(Tang) Li He
Youth is gone forever, and career will never be achieved. -(British) Browning
As long as there is spring in people's hearts, autumn wind will not cause people to worry. -(modern) Bing Xin