As to the poetical character itself, (I mean that sort of which, if I am any thing, I am a member; that sort distinguished from the Wordsworthian or egotistical sublime; which is a thing per se and stands alone) it is not itself—it has no self…It has as much delight in conceiving an Iago as an Imogen.

letter to Richard Woodhouse, 27 October 1818, in H. E. Rollins (ed.) Letters of John Keats (1958) vol. 1