St. Gregory of Nazianzus (c. 329 – 25 January 390), also known as Gregory the Theologian or Gregory Nazianzen, was a 4th-century Archbishop of Constantinople, theologian, and one of the Cappadocian Fathers (along with Basil the Great and Gregory of Nyssa). He is widely considered the most accomplished rhetorical stylist of the patristic age. Gregory made a significant impact on the shape of Trinitarian theology among both Greek and Latin-speaking theologians, and he is remembered as the “Trinitarian Theologian”.
“Besides all this and before all, keep I pray you the good deposit, by which I live and work, and which I desire to have as the companion of my departure; with which I endure all that is so distressful, and despise all delights; the confession of the Father and the Son and the Holy Ghost. This I commit unto you today; with this I will baptize you and make you grow. This I give you to share, and to defend all your life, the One Godhead and Power, found in the Three in Unity, and comprising the Three separately, not unequal, in substances or natures, neither increased nor diminished by superiorities or inferiorities; in every respect equal, in every respect the same; just as the beauty and the greatness of the heavens is one; the infinite conjunction of Three Infinite Ones, Each God when considered in Himself; as the Father so the Son, as the Son so the Holy Ghost; the Three One God when contemplated together; Each God because Consubstantial; One God because of the Monarchia. No sooner do I conceive of the One than I am illumined by the Splendour of the Three; no sooner do I distinguish Them than I am carried back to the One. When I think of any One of the Three I think of Him as the Whole, and my eyes are filled, and the greater part of what I am thinking of escapes me. I cannot grasp the greatness of That One so as to attribute a greater greatness to the Rest. When I contemplate the Three together, I see but one torch, and cannot divide or measure out the Undivided Light.”
~ from The Orations and Letters of Saint Gregory Nazianzus . Oration 40, XLI.
First Thoughts 