Published in Emotions in the Ancient and Medieval Mediterranean World

Keywords: Keywords: Alphonse IV of Portugal, Cardinal virtues, Dotzè del Crestià, Pacts, Peter I of Portugal.

In the vast encyclopedia of Crestià Dotze policy, completed in early part of the year in 1387, the Franciscan Catalan Francesc Eiximenis devoted a chapter to discuss this cardinal virtue, since the principles of the doctrine pacts, during the civil war in the year 1355 between Alfonso IV, king of Portugal, with his son, the Infante, Don Pedro. Led by Eiximenis this episode becomes an example of historical highlights, along with other similar examples, according to the doctrine defended in Dotze Pactista, the role the cardinal virtue of fortitude plays in defense of the common good against the errors and injustices of tyrants.