2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/84915Aristotle was the first to declare himself in the class of natural philosophers ({\em physiologoi}) and he was the first physicist because he spelled out the first definitions of some basic physical concepts. Moreover, he was the first encyclopedist of the world and perhaps the greatest6 pages plus one figure, enlarged version in English of a published Spanish textHistory and Philosophy of Physicstext