samuel taylor coleridge biographia literaria
“In this idea originated the plan of the Lyrical Ballads; in which it was agreed, that my endeavours should be directed to persons and characters supernatural, or at least romantic; yet so as to transfer from our inward nature a human interest and a semblance of truth sufficient to procure for these shadows of imagination that willing suspension of disbelief for the moment, which constitutes poetic faith.”
also negative capability john keats