Although evangelicalism is “spiritual” and empiricism is “natural,” the great principle of empiricism, that one must see for oneself and be in the presence of the thing one knows, applies as well to evangelical faith. Each of these two methodologies operates along a continuum that joins emotion to intellect; each joins externality to words through “ideas/ideals of sensation,” that is, through either perception or grace-in-perception or both. While empiricism refers to immediate contact with and direct impact from objects and subjects in time and place, evangelicalism entertains the notions that religious truth is concerned with experiential presuppositions and that experience need not be nonreligious. On the basis of the experiential common denominator between empiricism and evangelicalism, through the “both/and” logic of philosophical theology, I argue that John Wesley (1703–91), founder of British Methodism, and Jonathan Edwards (1703–58), leader of the American Great Awakening, theologize empiricism. They ground transcendentalism in the world, balance religious myths and religious morality with scientific reverence for fact and detail, and ally empirical assumptions with “disciplined” spirit. Above all, they share the simultaneously rational and sensationalist reliance on experience as the avenue to both natural and spiritual knowledge.