imagination and madness

Imagination does not breed insanity. Exactly what does breed insanity is reason. Poets do not go mad; but chess-players do. Mathematicians go mad, and cashiers; but creative artists very seldom. I am not, as will be seen, in any sense attacking logic: I only say that this danger does lie in logic, not in imagination. Artistic paternity is as wholesome as physical paternity. Moreover, it is worthy of remark that when a poet really was morbid it was commonly because he had some weak spot of rationality on his brain. Poe, for instance, really was morbid; not because he was poetical, but because he was specially analytical. Even chess was too poetical for him; he disliked chess because it was full of knights and castles, like a poem. He avowedly preferred the black discs of draughts, because they were more like the mere black dots on a diagram.

—G.K. Chesterton, Orthodoxy

best things ever said

Of the other poets, Baratýnsky wrote very little prose, but this little contains a quite disproportionate amount of the best things ever said in Russian on the subject of poetry. Two of his utterances should be especially remembered: his definition of lyrical poetry as "the fullest awareness of a given moment," and his remark that good poetry is rare because two qualities, as a rule mutually exclusive, are necessary to the making of a poet—"the fire of creative imagination and the coldness of controlling reason."

—D.S. Mirsky, "The Poets' Prose," A History of Russian Literature: From the Beginnings to 1900  (Vantage Books, 1958), edited by Francis J. Whitfield

negative capability

...several things dovetailed in my mind, and at once it struck me what quality went to form a Man of Achievement, especially in Literature, which Shakespeare possessed so enormously—I mean Negative Capability, that is, when a man is capable of being in uncertainties, mysteries, doubts, without any irritable reaching after fact and reason…

—John Keats, in a letter to his brothers, Dec. 21, 1817

image

No image satisfies me unless it is at the same time Knowledge, unless it carries with it its substance as well as its lucidity.
…
That which belongs to the realm of the image is irreducible by reason and must remain within the image or be annihilated.

—Antonin Artaud, “Manifesto in Clear Language”