Aquinas: Existence of God

Matteo Ricci (1552-1610) was an Italian Jesuit and one of the first Christian missionaries to China in the modern era. He was a genuine polymath—a translator, cartographer, mathematician, astronomer, and musician. Above all, Ricci was a missionary for the gospel. As we briefly examine his 1603 seminal work, The True Meaning of the Lord of Heaven, our hope is that we, as evangelical educators, will perceive some of the deeper principles necessary for our own missionary work among unreached people.

This article critically examines the structure and implications of the argument in ST 1, Q2, A3, associated with Aquinas’ First Way. Our central endeavor is to discern whether a certain disambiguation of point 6 (“There is something that is not moving/changing that moves/changes other things”) can be logically inferred from points 1-5. Through a three-part proof, the article establishes that under specific conditions, it can indeed be inferred. However, this interpretation notably diverges from Aquinas’ intended conclusion and subsequent stronger interpretations (...) of the claim. The paper also engages in discussions surrounding the soundness of the argument, assessing the plausibility of its premises in light of physics and logical analysis. The contribution does not seek to speculate on Aquinas’ understanding or to dismiss his perspective but rather to delineate what follows from his First Way premises, highlighting discrepancies with contemporary views on the nature of existence, particularly the notion of God. (shrink)