Ana María C. Minecan won the Extraordinary Doctorate Award for her thesis, presented in 2015, on the Reception of the physics of Aristotle by Tomás de Aquino (Complutense University of Madrid). Since then, in addition to a good number of articles, she has also published the volume From the eternity of the stars to the genesis of the universe: A journey through the cosmology of the late Middle Ages (Murcia: Diego Marín, 2017). Here we present another crystallization of her research in recent years: an introduction to the natural philosophy of Aristotle. She not only intends to initiate us to the book of Physics, but, in general, to the conceptions of the Greek philosopher on the philosophy of nature. Thus, this work comes to replace the lack in Spanish of a general introduction to this capital aspect of Aristotle’s thinking.