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

pawn e4

If poetry reaches the point which chess has reached, where the decisive, profound, and elegant combinations lie within the scope only of masters, and are appreciable only to competent and trained players, that will seem to many people a sorry state of affairs, and to some people a consequence simply of the sinfulness of poets; but it will not in the least mean that poetry is, as they say, dead; rather the reverse. It is when poetry becomes altogether too easy, too accessible, runs down to a few derivative formulae and caters to low tastes and lazy minds—it is then that the life of the art is in danger.

—Howard Nemerov, "The Difficulty of Difficult Poetry,” Reflections on Poetry and Poetics (Rutgers University Press, 1972)