What are the poems describing selfless help?

He has a good stone on Fangshan, which can be used to cut jade. (The Book of Songs? Xiaoya) You can't find a place to get it, and you don't need to spend too much effort to get it. ("Water Margin") Peach and plum don't say anything, but go their own way. (Historical Records) The weather is not as good as the geographical position, and the geographical position is not as good as human harmony. ("Mencius") There are difficulties in the world, and for it, the difficult ones are also easy; If you don't do it, it's hard for easy people. (Peng Duanshu) Everyone is responsible for the rise and fall of the world. (Gu) The day when there is no one, it is not for the existence of Yao, not for the death of Jie. "Gouzi") God pities grass, and the sun is shining on earth. (Li Shangyin)