 Descartes may in fact be committed to attributing reality to unactualized possibles, but a few interpretive problems arise if he does. One is that Descartes says elsewhere that unactualized being is nothing. In the Third Meditation, he argues that the objective reality of the idea of God cannot have been caused by potential perfections towards which a finite being might be evolving because potentialities are nothing and so have no causal power. He says,