5 And thus, if ungodly, unlawful, and forbidden actions are committed among them, I can no longer find ground for believing them to be such. And in their writings we read as follows, the interpretation which they give [of their views], declaring that Jesus spoke in a mystery to His disciples and apostles privately, and that they requested and obtained permission to hand down the things thus taught them, to others who should be worthy and believing. We are saved, indeed, by means of faith and love; but all other things, while in their nature indifferent, are reckoned by the opinion of men— some good and some evil, there being nothing really evil by nature.
Source: Adversus haereses (New Advent)