Tertullian on the Golden Rule (Matt 7:12, Luk 6:31)
"“And as ye would that men should do to you, do ye also to them likewise.” In this command is no doubt implied its counterpart: “And as ye would not that men should do to you, so should ye also not do to them likewise.” Now, if this were the teaching of the new and previously unknown and not yet fully proclaimed deity, who had favoured me with no instruction beforehand, whereby I might first learn what I ought to choose or to refuse for myself, and to do to others what I would wish done to myself, not doing to them what I should be unwilling to have done to myself, it would certainly be nothing else than the chance-medley of my own sentiments which he would have left to me, binding me to no proper rule of wish or action, in order that I might do to others what I would like for myself, or refrain from doing to others what I should dislike to have done to myself. For he has not, in fact, defined what I ought to wish or not to wish for myself as well as for others, so that I shape my...