Coleridge’s “Preternatural Agency,” a three hundred and sixty?one line verse contribution to Robert Southey’s Jacobin epic Joan of Arc (1796), represents his earliest attempt at a poetics of the supernatural. This essay links “Preternatural Agency” with Coleridge’s early Unitarian theology, metaphysics, and radical politics, which he was concerned to distinguish from atheistic expressions of political radicalism. The poem’s argument for the existence of spirit agents that guide human affairs is particularly indebted to the Unitarian Joseph Priestley whose metaphysical treatise Disquisitions Relating to Matter and Spirit (1777) blurred conventional distinctions between materiality and immateriality, corporeal and spirit agency. Priestley’s w...