When learning something, you should not give up halfway but persevere. Fabre spent a lifetime producing his masterpiece "Insects".

1. Although patience and persistence are painful things, they can gradually bring you benefits. ——Ovid

2. The most important reason why I can succeed in science is my love for science and my persistence in long-term exploration. ——(Britain) Darwin

3. The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold.

4. How can there be the fragrance of plum blossoms without a chill to the bones?

5. Sail against the current and hold on with all your strength, and then you will be able to retreat thousands of miles away with a single pole. ——Dong Biwu

6. The rope cuts the wood, and the water drops penetrate the stone.