Freewill and the teaching about the Constituents are incom patible.

But if they profess belief in Freewill—which is actually what they profess—that Freewill which they profess to believe in compels them to deny that Evil which they believe in. For both of them cannot stand. For either our Will sins, and (at other times) is proved to be righteous, and for this reason we have Freewill; or if the Constituents of Good and Evil stir in the Will, then it is a Constituent which overcomes, and is overcome, and not the Will.