Don't know any essays or books, but can't resist sending a poem by Langston Hughes which I think speaks directly to your theme: (italics added) I've known rivers: I've known rivers ancient as the world and older than the flow of human blood in human veins. My soul has grown deep like the rivers. I bathed in the Euphrates when dawns were young. I built my hut near the Congo and it lulled me to sleep. I looked upon the Nile and raised the pyramids above it. I heard the singing of the Mississippi when Abe Lincoln went down to New Orleans, and I've seen its muddy bosom turn all golden in the sunset. I've known rivers: Ancient, dusky rivers. My soul has grown deep like the rivers T Justine Roberts mailto:[log in to unmask]