From Keats’ complete letter to Richard Woodhouse on October 27, 1818:
A Poet is the most unpoetical of any thing in existence; because he has no Identity—he is continually in for—and filling some other Body—The Sun, the Moon, the Sea, and Men and Women who are creatures of impulse are poetical and have about them an unchangeable attribute—the poet has none; no identity—he is certainly the most unpoetical of all of God’s Creatures.
[cf. The School of No Media]