Abstract

Aquinas’s Five Ways are often presented as standard cosmological arguments for God’s existence. They tend to be anthologized and presented independently of the metaphysical thought that informs them. Thus, when Aquinas deploys technical metaphysical issues in his articulation of the ways, the contemporary reader may have trouble interpreting them correctly. This is particularly the case when Aquinas uses terminology familiar to a contemporary reader that nevertheless should be understood within the context of Aquinas’s own metaphysical thought. The Third Way is particularly challenging in this respect since it trades on modal notions that are familiar within a post-Leibnizian philosophical context but do not carry the same philosophical connotations. With that in mind, I propose to present a reading of the Third Way that is rooted within Aquinas’s own metaphysical thought and is defensible as an argument for God’s existence.