ABSTRACT
Anaximander is a prominent figure in the history of philosophy, according to In De caelo of Thomas Aquinas because, in the light of rationality, he discovered the boundary points of the cosmos, from the observer's perspective, namely: the stars and the Earth, the two items through which the milieu inaugurates philosophical cosmology and cosmography. This study shows that, based not only on the text of Aristotle, but also on other doxographic sources, notably in the In De caelo of Simplicius, Aquinas collects in his text cosmological theories attributed to Anaximander, such as geocentrism, finitude of the cosmos, infinity and deity of the regent of the whole and, reflecting upon them, the author manifests the grandeur of the genius of he who is regarded as the successor of Thales of Miletus.
Keywords:
Cosmology; cosmography; discovery; Anaximander; Thomas Aquinas
