To deny Evil a place among realities is necessarily to do away with the Good as well, and even to deny the existence of anything desirable; it is to deny desire, avoidance and all intellectual act; for desire has Good for its object, aversion looks to Evil; all intellectual act, all Wisdom, deals with Good and Bad, and is itself one of the things that are good. Ennead I,8,12
There must then be The Good – good unmixed – and the Mingled Good and Bad, and the Rather Bad than Good, this last ending with the Utterly Bad we have been seeking, just as that in which Evil constitutes the lesser part tends, by that lessening, towards the Good. Ennead I,8,12