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Natural philosophy

De principiis naturae

An early short work explaining matter, form, privation, generation, and the four causes.

Date

c. 1252-1256

Why it matters

It gives beginners a direct entrance into the Aristotelian framework Aquinas uses across metaphysics and natural philosophy.

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How to read it

  1. 1Learn the four causes before moving to more theological uses.
  2. 2Connect matter and form to act and potency.
  3. 3Use ordinary changes as examples while reading.