If you don't climb the mountain, you don't know the height of the sky; Don't face the deep stream, I don't know the thickness of the ground. (Xunzi)

Everything should be done in a down-to-earth manner, not in idle fantasy, not in vain, but in a down-to-earth manner. If you study with this attitude, the truth will be clear. If you do things with this attitude, your achievements will be successful. -Li Dazhao

At all times and in all countries, all those who have made achievements and made achievements to mankind are the results of down-to-earth and hard climbing. -Qian Sanqiang

There is a road in the mountain of books, but there is no limit to learning the sea.

Diligence is good at diligence and ignores play. Success is destroyed by thinking.