This work describes the main basic concepts of the astrological work of Claudius Ptolomeo, through an analysis of his Tetrabiblos. Comparing his ideas to those of other authors of his time, it is shown that Ptolomeo does not present stoic influences, as claimed by some historians. The conclusion of the article is that the basis of Ptolomeo's astrology is Aristotle's physics.
Aristotle; Ptolomeo; Astrology; ancient astronomy; Aristotelicphysics; stoicism