1. Only human labor is sacred. ——Gorky. 2. Labor is the source of all knowledge. ——Tao Zhu. 3. Labor is an inevitable obligation for everyone in society. ——Rousseau. 4. Labor is the father of wealth, and land is the mother of wealth. ——William Petty. 5. Life is about hard work, what will you get if you don’t ask for it? ——Zhang Heng. 6. We should remember that our career requires hands, not mouths. ——Tong Dizhou. 7. It’s noon on the day of hoeing, and the sweat is dripping from the soil. Who would have thought that every meal on the plate is hard work? ——Li Shen. 8. Labor creates the world. ——Marx. 9. If you don’t work hard, there will be no gain. ——Len Wright. 10. Success = hard work + correct methods + less empty words. ——Einstein. Hope it will be adopted.