In the first place, how arrogantly do the Marcionites build up their stupid system, bringing forward a new god, as if we were ashamed of the old one!… - Tertullian

In one sense there will be something difficult even for God — namely, that which He has not done — not because He could not, but because He would not, do it. For with God, to be willing is to be able, and to be unwilling is to be unable; all that He has willed, however, He has both been able to accomplish, and has displayed His ability.

Then, inasmuch as He too has fabricated a world out of some underlying material which is unbegotten, and unmade, and contemporaneous with God, just as Marcion holds of the Creator, you reduce this likewise to the dignity of that local space which has enclosed two gods, both God and matter.

Neque enim Brachmanae aut Indorum gymnosophistae sumus, silvicolae et exules vitae. Meminimus gratiam debere nos deo domino creatori; nullum fructum operum eius repudiamus, plane temperamus, ne[c] ultra modum aut perperam utamur. Itaque non sine foro, non sine macello, non sine balneis tabernis officinis stabulis nundinis vestris ceterisque commerciis cohabitamus in hoc saeculo.