Quotable: Trinitarian theology from the masters

'that pasage in Gregory of Nazianzus vastly delights me: "I cannot think on the one without quickly being encircled by the splendor of the three; nor can I discern the three without being straightway carried back to thhe one."' (John Calvin, Institutes 1.13.17)

'Sometimes, indeed, [the ancients] teach that the Father is the beginning of the Son; sometimes they declare that the Son has both divinity and essence from himself, and thus has one beginning with the Father. Augustine well and clearly expresses the cause of this diversity in another place, when he speaks as follows: "Christ with respect to himself is called God; with respect to the Father, Son. Again, the Father with respect to himself is called God; with respect to the Son, Father. In so far as he is called Father with respect to the Son, he is not the Son; in so far as he is called both Father with respect to himself, and Son with respect to himself, he is the same God." [...] Indeed, it is far safer to stop with that relation which Augustine sets forth than by too subtly penetrating into the sublime mystery to wander through many evanescent speculations.' (John Calvin, Institutes 1.13.19)