Thomas Aquinas's work on the Trinity in his Summa Theologiae has since the 1900s been seen, along with Augustine's De Trinitate, as representative of a Latin trinitarian tradition. This tradition is assumed to begin with the one God, the one divine essence as a whole. Only afterwards does it see God as three in persons. Philosophical conerns - rather than the revelation of God in Christ - are assumed to be the basis for the discussion. According to...