"Venite fratres, si vultis ut inseramini in vite; Dolor est cum vos videmus praecisos ita jacere. Numerate sacerdotes vel ab ipsa Petri sede; Et in ordine illo Patrum quis cui successit videte. Ipsa est petra, quam non vincunt superbae inferorum portae. (PL 43:30 )."

"All those of you who rejoice in peace, now it is time to judge the truth.... Undoubtedly in days gone by there were holy men as Scripture tells, For God stated that he left behind seven thousand men in safety, And there are many priests and kings who are righteous under the law, There you find so many of the prophets, and many of the people too. Tell me which of the righteous of that time claimed an altar for himself? That wicked nation perpetrated a very large number of crimes, They sacrificed to idols and may prophets were put to death, Yet not a single one of the righteous withdrew from unity. The righteous endured the unrighteous while waiting for the winnower: They all mingled in one temple but were not mingled in their hearts; They said such things against them yet they had a single altar."

"If there is something more excellent than the truth, then that is God; if not, then truth itself is God."

"Will is to grace as the horse is to the rider."

"Timeo Dominum transeuntem"

"If thou shouldst say, 'It is enough, I have reached perfection,' all is lost. For it is the function of perfection to make one know one's imperfection."

"Patientia comes est sapientiae"

"What, then, does He say? "Blessed are the poor in spirit, for theirs is the kingdom of heaven." We read in Scripture concerning the striving after temporal things, "All is vanity and presumption of spirit"; but presumption of spirit means audacity and pride: usually also the proud are said to have great spirits; and rightly, inasmuch as the wind also is called spirit. And hence it is written, "Fire, hail, snow, ice, spirit of tempest." But, indeed, who does not know that the proud are spoken of as puffed up, as if swelled out with wind? And hence also that expression of the apostle, "Knowledge puffs up, but charity edifies". And the poor in spirit are rightly understood here, as meaning the humble and God-fearing, i.e. those who have not the spirit which puffs up. Nor ought blessedness to begin at any other point whatever, if indeed it is to attain unto the highest wisdom; "but the fear of the Lord is the beginning of wisdom"; for, on the other hand also, "pride" is entitled "the beginning of all sin." Let the proud, therefore, seek after and love the kingdoms of the earth; but "blessed are the poor in spirit, for theirs is the kingdom of heaven.""

"If any one will piously and soberly consider the sermon which our Lord Jesus spoke on the mount, as we read it in the Gospel according to Matthew, I think that he will find in it, so far as regards the highest morals, a perfect standard of the Christian life: and this we do not rashly venture to promise, but gather it from the very words of the Lord Himself. For the sermon itself is brought to a close in such a way, that it is clear there are in it all the precepts which go to mould the life. … He has sufficiently indicated, as I think, that these sayings which He uttered on the mount so perfectly guide the life of those who may be willing to live according to them, that they may justly be compared to one building upon a rock."

"Spiritalis enim virtus Sacramenti ita est ut lux: et ab illuminandis pura excipitur, et si per immundos transeat, non inquinatur."

"Ergo noli quaerere intelligere ut credas, sed crede ut intelligas."

"The confession of evil works is the first beginning of good works."

"God judged it better to bring good out of evil than to suffer no evil to exist."

"An unjust law is no law at all."

"Cum dilectione hominum et odio vitiorum."

"The superfluities of the rich are the necessaries of the poor. They who possess superfluities, possess the goods of others."

"Nowhere in the Gospel do we read that the Lord said: "I am sending you a Paraclete who will teach you about the course of the sun and moon." For He wanted to make Christians, not mathematicians."

"Noli foras ire, in teipsum redi, in interiore homine habitat veritas. Et si tuam naturam mutabilem inveneris, trascende et teipsum."

"The light will not shame you, if it shows you your own ugliness, and that ugliness so offends you that you perceive the beauty of the light."

"We may not assent to the teaching even of the Catholic bishops, if at any time they are deceived into opinions contrary to the canonical Scriptures of God; but if they should so fall into error, and yet maintain the bond of unity and charity, let the apostle's saying avail in their case: 'And if in anything ye are otherwise minded, God shall reveal even this unto you.' Now these divine words have so manifest an application to the whole Church, that none but heretics in their stubborn perverseness and blind fury can bark against them. (Cf. Augustine's Reply to Faustus the Manichaean (Contra Faustum), book 11, 5 )"

"The Head and the body are Christ wholly and entirely. The Head is the only begotten Son of God, the body is His Church; the bridegroom and the bride, two in one flesh. All who dissent from the Scriptures concerning Christ, although they may be found in all places in which the Church is found, are not in the Church; and again all those who agree with the Scriptures concerning the Head, and do not communicate in the unity of the Church, are not in the Church"

"Quaerite, Donatistae, si nescitis, quaerite ab Ierusalem per terrena itinera in circuitu usque in Illyricum quot mansiones sint: si tot Ecclesias computemus, dicite quemadmodum per Africanas contentiones perire potuerunt. Ad Corinthios, ad Ephesios, ad Philippenses, ad Thessalonicenses, ad Colossenses vos solas Apostoli epistulas in lectione, nos autem et epistulas in lectione ac fide et ipsas Ecclesias in communione retinemus. PL 43, 414"