The Mystical Theology

The Mystical Theology is a brief text, addressed in the form of a letter to a disciple named Timothy, that lays out the most concentrated statement of apophatic, or negative, theology in the entire Dionysian corpus, arguing that God transcends every positive description as much as every negation, so that the highest form of theological speech is not affirmation or denial but a movement beyond both into what the text calls a divine darkness of unknowing. Short as it is, the work exercised influence wildly disproportionate to its length, becoming a foundational reference point for the whole subsequent tradition of Christian negative theology in both the Greek East and the Latin West, cited and commented on by theologians across many centuries and many different schools of thought who otherwise had little in common.

McGinn's study of the origins of Christian mysticism traces how the specific vocabulary and structure of apophatic argument the Mystical Theology establishes became, in effect, the shared grammar later mystical writers used even when developing very different theological systems of their own. The text builds its argument through a deliberate progression of negations, denying first sensible and then intelligible categories of God, until ordinary language itself is exhausted.

The text was transmitted under the name Dionysius the Areopagite, the Athenian convert of the apostle Paul mentioned in the Acts of the Apostles, a claim of apostolic authorship that gave the whole corpus, including the Mystical Theology, enormous authority for most of its transmission history. Modern scholarship has established with strong consensus that the real author was almost certainly a Christian writer active in Syria around the late fifth or early sixth century, working within a milieu heavily influenced by late Neoplatonist philosophy, and drawing on that philosophical framework to develop a distinctively Christian account of how the soul ascends beyond concepts toward God, which is why the author is conventionally referred to today as Pseudo-Dionysius rather than by the original attributed name.

The Mystical Theology reached the medieval Latin West through translation and directly shaped major later works, including the Cloud of Unknowing, whose anonymous author translated a version of this very text into English and built his own teaching on contemplative unknowing explicitly on the foundation Pseudo-Dionysius had laid centuries earlier. The wider Dionysian corpus also includes The Celestial Hierarchy and The Divine Names, both shaping later medieval angelology and theology alongside this shorter, more concentrated text.