The Thomistic Institute Aquinas on Nature and the Natural: Endoxa and Principles – Fr. Raymund Snyder, O.P.
Sep 29, 2025
Fr. Raymund Snyder, O.P., a Dominican priest and philosophy scholar, dives deep into Thomistic natural philosophy, emphasizing Aristotelian principles. He discusses the complexities of defining nature and the significance of endoxa, or received opinions, in philosophical inquiry. Snyder contrasts modern interpretations of nature with Aquinas' views, highlighting act and potency as central concepts. He beautifully ties together the notions of form and substance, illustrating how these ideas shape our understanding of motion and existence.
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Correlative Pairs Structure Natural Philosophy
- Correlative pairs (matter/form, substance/accident, act/potency) are the framework for understanding nature.
- These pairs mutually illuminate one another and explain change and unity in beings.
Act And Potency Define Motion
- Motion is defined via act and potency: motion is the act of what is in potency insofar as it is in potency.
- Understanding act/potency is essential to explaining how potentialities become actual in change.
Aristotle's Operational Definition Of Nature
- Aristotle's physics defines nature as 'a principle and cause of being moved and of being at rest' within a thing.
- This centers nature as an internal, per se cause of a thing's characteristic movements and rest.
