The Divine Names & The Mystical Theology

Two short treatises that teach how to speak of what cannot be spoken of: first affirm every good name of God, then deny every one of them, then deny the denial — and arrive at a darkness that is not absence but excess of light.

The technique of negative theology, packaged for export. It reaches the Kabbalists' vocabulary of Ein Sof through both Latin and Arabic channels, and it is why "nothing may be said of it" is a method and not a shrug.