 For Mersenne the unique perfect egalitarian emanation of God would be an action ad intra, that is the action through which God contemplates (and loves) Himself in the persons of the trinity. When one comes to causality ad extra, such as creation, one has to distinguish (ID II: 311–2) between divine power and divine will. The first contains and addresses infinite possibilities, the second chooses, from among them, a finite assortment.