Northrop Frye said this quote

I feel separated and cut off from the world around me, but occasionally I've felt that it was really a part of me, and I hope I'll have that feeling again, and that next time it won't go away. That's a dim, misty outline of the story that's told so often, of how man once lived in a golden age or a garden of Eden or the Hesperides ... how that world was lost, and how we some day may be able to get it back again. ... This story of the loss and regaining of identity is, I think, the framework of all literature.