They attribute incredible power to the Will.

But it is possible for thee to hear, O Hearer, what is greater than this. For lo, when we will, the Evil in us may 'become lessened' and not injure us. And in the twinkling of an eye, again, if we will, it may be real and 'fierce' and 'deadly' in us. [Ov. p. 56, l. 3.] O what a great marvel is this, that is to say, O what great blindness (in the false Teaching) ! For see, that when we lessen the Evil in us we do not mix anything in it except the good Will alone, that it may be lessened. And when it (i.e., Evil) revives and rages we do not mingle anything in it that it may rage except the evil Will. But if our Will lessens it or makes it worse, behold, is it not clear even to fools that our Will is good and evil ? Therefore they are alluding to Freewill when they use all these evil terms, and they are uttering blasphemies against this Will, though they are not aware of it. For if a man drinks diluted wine and mixes his good. Will in it, can it acquire strength and become overpowering though he should mix no (more) wine in it ? And if, on the other hand, the wine is unmixed and strong, can he lessen its strength by his Will alone, though he mix no water in it ? Therefore, let them take their stand either on a Mixing or on the Will.