Next, he was engaged with Hartley's tribes of mind, "etherial braid, thought-woven,"--and he busied himself for a year or two with vibrations and vibratiuncles, and the great law of association that binds all things in its mystic chain, and the doctrine of Necessity (the mild teacher of Charity) and the Millennium, anticipative of a life to come--and he plunged deep into the controversy on Matter and Spirit, and, as an escape from Dr. Priestley's Materialism, where he felt himself imprisoned by the logician's spell, like Ariel in the cloven pine-tree, he became suddenly enamoured of Bishop Berkeley's fairy-world,[136] and used in all companies to build the universe, like a brave poetical fiction, of fine words--and he was deep-read in Malebranche, and in Cudworth's Intellectual System (a huge pile of learning, unwieldy, enormous) and in Lord Brook's hieroglyphic theories, and in Bishop Butler's Sermons, and in the Duchess of Newcastle's fantastic folios, and in Clarke and South and Tillotson, and all the fine thinkers and masculine reasoners of that age--and Leibnitz's _Pre-established Harmony_ reared its arch above his head, like the rainbow in the cloud, covenanting with the hopes of man--and then he fell plump, ten thousand fathoms down (but his wings saved him harmless) into the _hortus siccus_ of Dissent, where he pared religion down to the standard of reason, and stripped faith of mystery, and preached Christ crucified and the Unity of the Godhead, and so dwelt for a while in the spirit of John Huss and Jerome of Prague and Socinus and old John Zisca, and ran through Neal's History of the Puritans, and Calamy's Non-Conformists' Memorial, having like thoughts and passions with them--but then Spinoza became his God, and he took up the vast chain of being in his hand, and the round world became the centre and the soul of all things in some shadowy sense, forlorn of meaning, and around him he beheld the living traces and the sky-pointing proportions of the mighty Pan--but poetry redeemed him from this spectral philosophy, and he bathed his heart in beauty, and gazed at the golden light of heaven, and drank of the spirit of the universe, and wandered at eve by fairy-stream or fountain, ----"When he saw nought but beauty, When he heard the voice of that Almighty One In every breeze that blew, or wave that murmured"--