“My own conclusions on the nature of poetry, in the strictest use of the word, have been in part anticipated in some of the remarks on the Fancy and Imagination in the early part of this work. What is poetry?—is so nearly the same question with, what is a poet?—that the answer to the one is involved in the solution of the other. For it is a distinction resulting from the poetic genius itself, which sustains and modifies the images, thoughts, and emotions of the poet’s own mind.
The poet, described in ideal perfection, brings the whole soul of man into activity, with the subordination of its faculties to each other according to their relative worth and dignity. He diffuses a tone and spirit of unity, that blends, and (as it were) fuses, each into each, by that synthetic and magical power, to which I would exclusively appropriate the name of Imagination. This power, first put in action by the will and understanding, and retained under their irremissive, though gentle and unnoticed, control, laxis effertur habenis, reveals “itself in the balance or reconcilement of opposite or discordant” qualities: of sameness, with difference; of the general with the concrete; the idea with the image; the individual with the representative; the sense of novelty and freshness with old and familiar objects; a more than usual state of emotion with more than usual order; judgment ever awake and steady self-possession with enthusiasm and feeling profound or vehement; and while it blends and harmonizes the natural and the artificial, still subordinates art to nature; the manner to the matter; and our admiration of the poet to our sympathy with the poetry. …
Finally, Good Sense is the Body of poetic genius, Fancy its Drapery, Motion its Life, and Imagination the Soul that is everywhere, and in each; and forms all into one graceful and intelligent whole.”
— Samule Taylor Coleridge, BIOGRAPHIA LITERARIA, Chapter XIV