The purpose of this article is to expose a basic flaw at the root of perennialism as a method for studying mysticism—its distinction between ‘exoteric’ and ‘esoteric’ components of mysticism and religion. Rather than being distinct, the specific ‘exoteric’ doctrines of a given mystic’s tradition penetrate the mystics’ knowledge-claims. Thus, the ‘esoteric’ dimension in a mystical tradition is permeated by that mystical tradition’s ‘exoteric’ doctrines, not by the transcultural and ahistorical perennial spine that perennialists postulate. Contrary to what the perennialists (...) suggest, there is no one underlying esoteric set of beliefs embedded in all traditional religions that all mystics share. Rather, in the different religious traditions of the world, there are genuinely different mysticisms with different beliefs, practices, values, and goals. Thus, the perennialist approach distorts the history of mysticism. It is better seen as a theology of religions than as an alleged discernment of timeless truths presented throughout the history of mysticism. (shrink)