The actual world, according to Leibniz, is just one of many possible worlds that God considers when deciding to create. He chooses this one because it is the best and a perfectly wise and benevolent agent necessarily chooses the best. But how can there be nonactual possible worlds if the actual world is such that it is necessarily created by a necessary being? Throughout his career Leibniz grappled with this question, resulting in a rich and fascinating theory of modality. In this paper, I consider the question of the grounds of possibility in Leibniz. In many texts, he says that possibility is grounded in ideas in the divine mind. I argue, however, that, for Leibniz, this is not the ultimate ground of possibility because the source of the content of God's ideas lies in the divine attributes.

ND: Tea starts at 15:00!