Where does goodness come from, such as water, morality, rivers entering the sea and spitting on the world?

Virtue comes from Zhouyi. Kuhn (Hungarian communist party leader)

All rivers run into the sea from Jin's Preface to the Famous Ministers of the Three Kingdoms.

The Duke of Zhou spat, and the world returned to his heart "comes from the poem" Short Songs "written by Cao Mengde, a writer, poet and strategist in the Eastern Han Dynasty.