 Peter Geach (1972, 1973, 1980) argues that it is meaningless to ask whether or not some a and b are “the same”; rather, sameness is relative to a sortal concept. Thus, while it is senseless to ask whether or not Paul and Saul are identical, we can ask whether or not Paul and Saul are the same human, same person, same apostle, same animal, etc. The doctrine of the Trinity, then, is construed as the claim that the Father, Son, and Holy Spirit are the same God, but are not the same Person. They are “God-identical but Person-distinct” (Rea 2003, 432).