Thierry of Chartres also offered a memorable, if not particularly illuminating suggestion for how to conceive of the Trinity. He compared the three Persons in one God to the fact that 1 ×1 × 1 = 1. He meant this to represent not just the way that unity can be preserved even as multiplicity is introduced, but also the equality of the Persons to one another. Again, the Chartrians’ training in the liberal arts is showing here, with Thierry applying arithmetic to theology, much as Bernard of Chartres had used grammar in his metaphysics.
