  In another passage (608D–610D), Damian appeals to the efficacy of God’s will to argue that a contradictory state of affairs cannot become actualized. Here, different considerations apply to the good and the evil (cf.  Section 3).  The good things are because God wills them to be. God’s will as the efficient cause of the being of beings has such intensity that what he wills to be, cannot not be, and what he does not will to be, cannot be. Good things, then, are unequivocally in the case that they are, and a contradictory state of affairs cannot be realized through some good thing’s being and not being at the same moment. As far as good things are concerned, we can say that the validity of the principle of non-contradiction is a consequence of divine omnipotence: it is an indication of the might of God’s will as the efficient cause of being. The same is true of the validity of the consequence of necessity and impossibility; what some people see as a limitation to God’s power is really an expression of his power (608D–609A, 610B).