And by one God are many treasures dispensed; some disclosed by the law, others by the prophets; some to the divine mouth, and others to the heptad of the spirit singing accordant. And the Lord being one, is the same Instructor by all these. Here is then a comprehensive precept, and an exhortation of life, all-embracing: "As you would that men should do unto you, do likewise to them."Paed. 3.88.1 [III.12].
Those, then, will not escape the curse of yoking an ass with an ox who, judging certain things not to suit them, command others to do them, or the reverse. This Scripture has briefly showed, when it says, "What you hate you shall not do to another." [Tobit 4:15]
Lib. V, 70-78.All concupiscence of desire he removed from the heart. For this is the circumcision of the New Testament, that God Christ, Son of God, extended: that we circumcises ourselves from desire, avarice, malice, cupidity, theft, fraud, fornication, and all that which you do not want another to do to you, you do not do to another. This is the circumcision of the Christians, which the first saints had, that is, Enoch, Noah, Job, Melchizedek, which did not have circumcision according to the flesh, but according to the heart.Omnis concpiscentia libidinis de corde concipitur. Proinde circumcisio novi testamenti talis est, quam Deus Christus Filius Dei, ostendit, ut circumcidamus nons libidinem, avaritiam, malitiam, cupidtatem, furta, fraudes, fornicationem, et omne quod tibi non vis fieri, alio ne feceris. Haec est circumcisio Christianorum, quam et primi sanctorum habuerunt, scilicet Enoch, Noe, Iob, Melchisedec, qui non carnis sed circumcisionem cordis habuerunt.
No. 79: Qualem vis esse tibi proximum tuum, talis et tu esto proximis tuis.
That which you wish your neighbor to do to you, the same should you do to your neighbor.
No. 179: Ea quae pati non vis, neque facias.
What you do not want to happen to you, do not do to another.