Read it through once

Poetry, as has been said, differs in this respect from logic, that it is not subject to the control of the active powers of the mind, and that its birth and recurrence have no necessary connexion with the consciousness or will. It is presumptuous to determine that these are the necessary conditions of all mental causation, when mental effects are experienced unsusceptible of being referred to them. The frequent recurrence of the poetical power, it is obvious to suppose, may produce in the mind a habit of order and harmony correlative with its own nature and its effects upon other minds. But in the intervals of inspiration, and they may be frequent without being durable, a poet becomes a man, and is abandoned to the sudden reflux of the influences under which others habitually live. But as he is more delicately organized than other men, and sensible to pain and pleasure, both his own and that of others, in a degree unknown to them, he will avoid the one and pursue the other with an ardour proportioned to this difference. And he renders himself obnoxious to calumny, when he neglects to observe the circumstances under which these objects of universal pursuit and flight have disguised themselves in one another's garments.