Matthew 22:39

Athenagoras A Plea for the Christians

ight to us, and to whom a wanton look is adultery, the eyes being made for other purposes, and who are to be called to account for their very thoughts, how can any one doubt that such persons practise self-control? For our account lies not with human laws, which a bad man can evade (at the outset I proved to you, sovereign lords, that our doctrine is from the teaching of God), but we have a law which makes the measure of rectitude to consist in dealing with our neighbour as ourselves.[124]

Clement of Alexandria Who is the Rich Man that Shall Be Saved?

The second in order, and not any less than this, He says, is, "Thou shalt love thy neighbour as thyself,"[38]

Tertullian On the Apparel of Women Book II

Are we to paint ourselves out that our neighbours may perish? Where, then, is (the command), "Thou shall love thy neighbour as thyself? "[17]

Cyprian Epistle VI "But if ye bite and find fault with one another, take heed that ye be not consumed one of another."[19]

Clementine Homily XII

And as he wishes to be praised, and blessed, and honoured, and to have all his sins forgiven, thus he does to his neighbour, loving him as himself.[14]

The Second Epistle of Pope Fabian

And He says also, "Thou shalt love thy neighbour as thyself; "[4]