This is a philosophy that teaches people how to behave and do things. "No desire for haste, no small gain" means that no matter what you do, don't have too much desire, don't be too anxious, and don't just be quick; people should also not be greedy for small gains or small favors. "Haste makes waste, and small things make great things impossible." This sentence is even more familiar to the public. It means that if you do not think carefully first and only pursue fast, you will be slower and may even fail. If you relax your vigilance due to a small profit, you will not achieve a big career.