Joseph Kenny, O.P.
Philosophy of nature is in a way the most important course in Philosophy. Metaphysics and philosophy of the nature of man are more important because what they treat, but these sciences are grounded in Philosophy of Nature, and without a good Philosophy of Nature there can be no sound metaphysics or philosophy of man.
I share the conviction of many that Thomas Aquinas' philosophy is essential for any sound philosophy of nature. Yet it cannot be denied that the chemistry and physics he inherited and accepted is flawed in many important points, and these affect his fundamental philosophy of nature, since for him physics, chemistry and biology formed an integral whole with the basic principles studied in the Physics. His geocentric universe is a small problem in comparison with his lack of appreciation of the full implications of the idea of impetus.
There are also many erroneous ideas circulating in introductions to modern texbooks on the physical sciences. These and other problems are faced in this book, to the extent that is possible in an introductory work such as this. Some of the passages of modern authors have been taken from Vincent E. Smith
Plan of the course
Following Aristotle's Physics and Thomas' Commentary, we have the following tasks to do: