O Trinity, eternal Trinity! Fire, abyss of love... Was it necessary that you should give Even the Holy Trinity as food for souls?... You gave us not only your Word Through the Redemption and in the Eucharist, But you also gave yourself In the fullness of love for your creature.
St. Catherine of Siena
In the doctrine of the Trinity,' wrote Herman Bavinck, 'beats the heart of the whole revelation of God for the redemption of humanity.' As the Father, the Son, and the Spirit, 'our God is above us, before us, and within us.' The doctrine of the Trinity - God as one in essence and three in person - shapes and structures Christian faith and practice in every way, distinguishing it from all world religions.
Michael S. Horton
Don't be fearful about the journey ahead; don't worry about where you are going or how you are going to get there. If you believe in the first person of the Trinity, God the Father, also believe in the second person of the Trinity, the one who came as the Light of the World, not only to die for people, but to light the way... This one, Jesus Christ, is himself the Light and will guide your footsteps along the way.
We find upon all occasions, the early Christian writers speak of the Father as superior to the Son, and in general they give him the title of God , as distinguished from the Son; and sometimes they expressly call him, exclusively of the Son, the only true God ; a phraseology which does not at all accord with the idea of the perfect equality of all the persons in the Trinity. But it might well be expected, that the advances to the present doctrine of the Trinity should be gradual and slow. It was, indeed, some centuries before it was completely formed.
We worship unity in trinity, and trinity in unity; neither confounding the person nor dividing the substance. There is one person of the Father, another of the Son, and another of the Holy Ghost; but the Godhead of the Father, and of the Son, and of the Holy Ghost, is all one; the glory equal, the majesty co-eternal.
Should a priest reject relativity because it contains no authoritative exposition on the doctrine of the Trinity? Once you realize that the Bible does not purport to be a textbook of science, the old controversy between religion and science vanishes... The doctrine of the Trinity is much more abstruse than anything in relativity or quantum mechanics; but, being necessary for salvation, the doctrine is stated in the Bible. If the theory of relativity had also been necessary for salvation, it would have been revealed to Saint Paul or to Moses.
Georges Edouard Lemae®tre
Should a priest reject relativity because it contains no authoritative exposition on the doctrine of the Trinity? Once you realize that the Bible does not purport to be a textbook of science, the old controversy between religion and science vanishes . . . The doctrine of the Trinity is much more abstruse than anything in relativity or quantum mechanics; but, being necessary for salvation, the doctrine is stated in the Bible. If the theory of relativity had also been necessary for salvation, it would have been revealed to Saint Paul or to Moses.
The "name" of the Most Holy Trinity is in a certain way impressed upon everything that exists, because everything that exists, down to the least particle, is a being in relation, and thus God-relation shines forth, ultimately creative Love shines forth. All comes from love, tends toward love, and is moved by love, naturally, according to different grades of consciousness and freedom... The strongest proof that we are made in the image of the Trinity is this: only love makes us happy, because we live in relation, and we live to love and be loved.
Pope Benedict XVI
We can discover much about God by looking at nature. Take the Trinity for example. The Trinity is sort of like an apple. You've got the seeds, the flesh, and the skin. Three different things. Still, together they form one thing, an apple. And under no circumstances will one apple be three things, but the seeds, skin, and flesh will always be three things.
Alan de Jager
Her [Mary's] motherhood extends beyond view. In the will of the Son, she becomes at once mother and maid: sheltering him, but sheltered in him, forming him, but formed by him ... When she pronounces the words: 'Be it done to me according to thy word', the Mother conceives the mystery from the Trinity, in order to give it to the Son. The Son gives the word back to the Trinity by giving everything he has back to the Father in the Spirit. Then, after the Father has received it again, it is distributed to mankind by means of that extravagant expansioning-the Eucharist and the Holy Spirit.
Adrienne von Speyr
Altho' I rarely waste time in reading on theological subjects, as mangled by our Pseudo-Christians, yet I can readily suppose Basanistos may be amusing. Ridicule is the only weapon which can be used against unintelligible propositions. Ideas must be distinct before reason can act upon them; and no man ever had a distinct idea of the trinity. It is mere Abracadabra of the mountebanks calling themselves the priests of Jesus. If it could be understood it would not answer their purpose. Their security is in their faculty of shedding darkness, like the scuttlefish, thro' the element in which they move, and making it impenetrable to the eye of a pursuing enemy, and there they will skulk. [Letter to Francis Adrian Van der Kemp on 30 July 1810 denouncing the Christian doctrine of the Trinity]
If the moderns really want a simple religion of love, they must look for it in the Athanasian Creed. The truth is that the trumpet of true Christianity, the challenge of the charities and simplicities of Bethlehem or Christmas Day never rang out more arrestingly and unmistakably than in the defiance of Athanasius to the cold compromise of the Arians. It was emphatically he who really was fighting for a God of Love against a God of colourless and remote cosmic control; the God of the stoics and the agnostics. It was emphatically he who was fighting for the Holy Child against the grey deity of the Pharisees and the Sadducees. He was fighting for that very balance of beautiful interdependence and intimacy, in the very Trinity of the Divine Nature, that draws our hearts to the Trinity of the Holy Family. His dogma, if the phrase be not misunderstood, turns even God into a Holy Family.