(Updated July 14, 2025)
This Quote Archive collects pertinent quotes from the Church Father, St. Ambrose of Milan.
Next to each quote are the topic-based Quote Archives in which they are included.
This Quote Archive is being continuously updated as research continues.
Treatises
St. Ambrose, Exposition of the Christian Faith (c. 379)
(Book 4, §§26, 57) | ROCK | KEYS | PRIMACY
(§26) Go your way, therefore, to my brethren—that is, to those everlasting doors, which, as soon as they see Jesus, are lifted up. Peter is an everlasting door, against whom the gates of hell shall not prevail [Matt. 16:18]. John and James, the sons of thunder, to wit [Mark 3:17], are everlasting doom. Everlasting are the doors of the Church, where the prophet, desirous to proclaim the praises of Christ, says: “That I may tell all your praises in the gates of the daughter of Sion” (Ps. 9:14)…
(§57) Moreover, that you may know that it is after His Manhood that He entreats, and in virtue of His Godhead that He commands, it is written for you in the Gospel that He said to Peter: “I have prayed for you, that your faith fail not” (Luke 22:32). To the same Apostle, again, when on a former occasion he said, “You are the Christ, the Son of the living God,” He made answer: “You are Peter, and upon this Rock will I build My Church, and I will give you the keys of the kingdom of heaven” (Matt. 16:18). Could He not, then, strengthen the faith of the man to whom, acting on His own authority, He gave the kingdom, whom He called the Rock, thereby declaring him to be the foundation of the Church? Consider, then, the manner of His entreaty, the occasions of His commanding. He entreats, when He is shown to us as on the eve of suffering: He commands, when He is believed to be the Son of God.
(Book 5, §§1-2) | PRIMACY
(§1) “Who, then, is a faithful and wise servant, whom his lord has made ruler over his household, to give them meat in due season? Blessed is that servant, whom his lord when he comes shall find so doing” (Matt. 24:45-46). Not worthless is this servant: some great one ought he to be. Let us think who he may be.
(§2) It is Peter, chosen by the Lord Himself to feed His flock, who merits thrice to hear the words: “Feed My little lambs; feed My lambs; feed My sheep” [John 21:15-19]. And so, by feeding well the flock of Christ with the food of faith, he effaced the sin of his former fall. For this reason is he thrice admonished to feed the flock; thrice is he asked whether he loves the Lord, in order that he may thrice confess Him, Whom he had thrice denied before His Crucifixion.
St. Ambrose, On Abraham (387)
- The Sacrament of Marriage, Divorce, and Contraception | Book 1, Part 7, §59
(Book 1, Part 7, §59)1
It is allowed to none to know a woman other than his wife. Therefore, the right to marry is given to you, lest you fall into a snare and sin with a strange woman. You are bound to your wife; do not seek release because you are not permitted to marry another while your wife lives [Rom. 7:2-3]. For to seek another woman when you have your own is a crime of adultery more serious when you think that authority for your sin may be obtained from the Law. The sin would be more tolerable if it were to lie hidden than if its justification were to be usurped: nor is sinning with another man’s life alone adultery, but every union which lacks the legality of marriage.
St. Ambrose, Concerning Repentance (388)
And this confession is indeed rightly made by them [the heretical Novatians], for they have not the succession of Peter, who hold not the chair of Peter, which they rend by wicked schism; and this, too, they do, wickedly denying that sins can be forgiven even in the Church, whereas it was said to Peter: “I will give unto thee the keys of the kingdom of heaven, and whatsoever thou shalt bind on earth shall be bound also in heaven, and whatsoever thou shalt loose on earth shall be loosed also in heaven” (Matt. 16:19). And the vessel of divine election himself [St. Paul] said: “If you have forgiven anything to anyone, I forgive also, for what I have forgiven I have done it for your sakes in the person of Christ” (2 Cor. 2:10). Why, then, do they read Paul’s writings, if they think that he has erred so wickedly as to claim for himself the right of his Lord? But he claimed what he had received, he did not usurp that which was not due to him.
St. Ambrose of Milan, Commentaries on Twelve Psalms of David (c. 389)
- The Blessed Sacrament of the Holy Eucharist | Ch. 38, §25
(Ch. 38, §25)2
We saw the prince of priests coming to us, we saw and heard him offering his blood for us. We follow, because we are able, being priests, and we offer the sacrifice on behalf of the people. Even if we are of but little merit, still, in the sacrifice, we are honorable. Even if Christ is not now seen as the one who offers the sacrifice, nevertheless it is he himself who is offered in sacrifice here on earth when the body of Christ is offered. Indeed, to offer himself he is made visible in us, he whose word makes holy the sacrifice that is offered.
St. Ambrose of Milan, On the Mysteries (c. 390)
We have proved the sacraments of the Church to be the more ancient, now recognize that they are superior. In very truth it is a marvelous thing that God rained manna on the fathers, and fed them with daily food from heaven; so that it is said, “So man ate angels’ food” (Ps. 78:25). But yet all those who ate that food died in the wilderness, but that food which you receive, that living Bread which came down from heaven, furnishes the substance of eternal life; and whosoever shall eat of this Bread shall never die, and it is the Body of Christ.
(§50) Perhaps you will say, “I see something else, how is it that you assert that I receive the Body of Christ?” And this is the point which remains for us to prove. And what evidence shall we make use of? Let us prove that this is not what nature made, but what the blessing consecrated, and the power of blessing is greater than that of nature, because by blessing nature itself is changed…
(§53) …And this body which we make is that which was born of the Virgin. Why do you seek the order of nature in the Body of Christ, seeing that the Lord Jesus Himself was born of a Virgin, not according to nature? It is the true Flesh of Christ which crucified and buried, this is then truly the Sacrament of His Body.
(§54) The Lord Jesus Himself proclaims: “This is My Body” (Matt. 26:26). Before the blessing of the heavenly words another nature is spoken of, after the consecration the Body is signified. He Himself speaks of His Blood. Before the consecration it has another name, after it is called Blood. And you say, “Amen,” that is, “It is true.” Let the heart within confess what the mouth utters, let the soul feel what the voice speaks…
(§58) Wherefore, too, the Church, beholding so great grace, exhorts her sons and her friends to come together to the sacraments, saying: “Eat, my friends, and drink and be inebriated, my brother” (Song. 5:1). What we eat and what we drink the Holy Spirit has elsewhere made plain by the prophet, saying, “Taste and see that the Lord is good, blessed is the man that hopes in Him.” In that sacrament is Christ, because it is the Body of Christ, it is therefore not bodily food but spiritual. Whence the Apostle says of its type: “Our fathers ate spiritual food and drank spiritual drink” (1 Cor. 10:3), for the Body of God is a spiritual body; the Body of Christ is the Body of the Divine Spirit, for the Spirit is Christ, as we read: “The Spirit before our face is Christ the Lord” (Lam. 4:20). And in the Epistle of Peter we read: “Christ died for us” (1 Pet. 2:21). Lastly, that food strengthens our heart, and that drink “makes glad the heart of man,” as the prophet has recorded.
St. Ambrose, Hexameron (393)
- The Communion of Saints: Intercession and Relics | Book 5, Homily 8, Ch. 24, §90
- The Blessed Sacrament of the Holy Eucharist | Book 5, Homily 8, Ch. 24, §90
(Book 5, Homily 8, Ch. 24, §90)3
But now it is fitting time [Holy Thursday] that this discourse be brought to an end–a time for silence or for tears, a time in which is celebrated the forgiveness of sins. For us, too, in our holy rites that mystical cock crows, as the cock of Peter did in our discourse. May Peter, who wept so well for himself, weep also for us and may the benign countenance of Christ turn toward us. Let there come upon us the Passion of the Lord Jesus which daily forgives us our sins and effects the office of remission.
Biblical Commentaries
St. Ambrose, Commentary on the Gospel of Luke
(Book 8, §5)4
So, you cast off your wife as though by right and without remorse. You cast her off and think it lawful? Yes, civil law allows it, I know, but divine law does not. You observe man-made laws, but I would caution you to fear God. Listen to the law of God to which even our own lawmakers defer: “What God has joined together, let no man put asunder” (Matt. 19:6).
Sermons
St. Ambrose, On the Death of Satyrus (379)
But he was not so eager as to lay aside caution. He called the bishop to him, and esteeming that there can be no true thankfulness except it spring from true faith, he inquired whether he agreed with the Catholic bishops, that is, with the Roman Church? And possibly at that place the Church of the district was in schism. For at that time Lucifer had withdrawn from our communion, and although he had been an exile for the faith, and had left inheritors of his own faith, yet my brother did not think that there could be true faith in schism. For though schismatics kept the faith towards God, yet they kept it not towards the Church of God, certain of whose limbs they suffered as it were to be divided, and her members to be torn. For since Christ suffered for the Church, and the Church is the body of Christ, it does not seem that faith in Christ is shown by those by whom His Passion is made of none effect, and His body divided.
Footnotes
- St. Ambrose, Theodosia Tomkinson, trans., Saint Ambrose of Milan: On Abraham (Etna, CA: Center for Traditionalist Orthodox Studies, 2000), 29. ↩︎
- Jimmy Akin, The Fathers Know Best: Your Essential Guide to the Teachings of the Early Church (San Diego: Catholic Answers Press, 2010), 302. ↩︎
- St. Ambrose, John J. Savage, trans., The Fathers of the Church, Vol. 42: Saint Ambrose, Hexameron, Paradise, and Cain and Abel (Washington, DC: The Catholic University of America Press, 1961), 225. ↩︎
- St. Ambrose, Ide M. Ni Riain, trans., Commentary of Saint Ambrose on the Gospel According to Saint Luke (Dublin: Haleyon Press, 2001), 271. ↩︎
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