If the Body is essentially Evil, Truth cannot come from Teachers clothed with such a Body?

And, therefore, accordingly to this infallible refutation and undeniable evidence and unanswerable demonstration and experience which neither errs nor causes to err, Marcion, too, and Mani and Bardaisan, because they were clothed with the Body which they represent as from the Element of Evil, were unable to be good in it, because, as they say, it is from the Evil One, nor (could they be) upright, because it is vicious; nor (could they be) true, because it lies; nor (could they be) pure, [P. 147, l.9.] because it is turbid. And let them not be angry because these things have been spoken against them by us. For their mouth overthrows them, not our tongue; and their Teaching, not our Will; and their Error, not our free Choice. For they said that the Body comes from the Element of Evil and lies; and it is clear that because their Souls were playing on this hateful harp, the 'intoxicating Foulness of the Body' did not allow the melody of Truth to be played on its strings. And, therefore, they have decided against themselves that they are preachers of Error, owing to the fact that they are mixed in the Body which comes from Error according to their decision. For it (i.e., the Body) speaks against them.