This text is a translation of the treatise De principiis naturae (On the Principles of Nature), written by Thomas Aquinas. It provides a description of the basic questions occupying the philosophy of nature and metaphysics as Aquinas sees them. These questions are, first and foremost, the ones concerning the phenomenon of becoming, which, according to Aquinas, constitutes the basic object of investigations conducted by the philosopher of nature. In the treatise, Aquinas distinguishes substance from accidents; describes the composite of matter and form, the four kinds of causes and how they are related to one another; and, finally, presents different kinds of necessity and identity.
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Roczniki Filozoficzne · ISSN 0035-7685 | eISSN 2450-002X
© Towarzystwo Naukowe KUL & Katolicki Uniwersytet Lubelski Jana Pawła II
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