Read it through once

“Let essence, whatsoe’er it be, extend--never contract!” Sordello says. “Already you include the multitude”; that is, you gather up in yourself, in an effective fulness and harmony, what lies scattered and ineffective in the multitude; “then let the mulitude include yourself”; that is, be substantiated, essenced with yourself; “and the result were new: themselves before, the multitude turn YOU” (become yourself). “This were to live and move and have, in them, your being, and secure a diadem you should transmit (because no cycle yearns beyond itself, but on itself returns) when the full sphere in wane, the world o’erlaid long since with you, shall have in turn obeyed some orb still prouder, some displayer, still more potent than the last, of human will, and some new king depose the old.”