Abstract
The present paper describes how Fernando de Roa, professor at the University of Salamanca in the 15th century, received Aristotle’s practical philosophy. This article expounds his interpretation on three main topics of classical ethics and politics: justice as a social virtue, natural servitude and happiness as the end of man. Roa, in his repetitions, as well as in his commentaries on Politics, focuses on these questions and addresses them with a renewed and modern Aristotelianism, which is based on the ideas of Pedro de Osma and the great medieval thinkers.