RT Article T1 Elementary Particles are not Substances JF Proceedings of the American Catholic Philosophical Association VO 91 SP 63 OP 72 A1 Verrill, Robert A1 Pyda, Janusz 1980- LA English YR 2017 UL https://ixtheo.de/Record/1687950180 AB The doctrine of the salvation of souls is obviously central to our Christian faith. Yet one of the challenges of communicating this truth is that many people have ontological commitments that don't even allow for the existence of souls. Therefore, a philosophical understanding of physical reality which is compatible with a Christian understanding of the human person is especially important if we are to preach the Gospel effectively in the modern age. Like many Christian philosophers, I believe that St. Thomas Aquinas provides us with such a philosophical understanding of physical reality. Nevertheless, we need to be careful in how we map Aquinas's philosophical concepts onto physical phenomena. It is with this concern in mind that I will argue that elementary particles are not substances. K1 Particles K1 PHENOMENOLOGICAL theory (Physics) K1 Philosophers DO 10.5840/acpaproc2019102396