A teacher by profession, Casona expressed a strong educational vocation, inspired by the ideals of the Free Institution of Education, and his defense of progressive values in diverse cultural outreach projects such as Pedagogical Missions, created during the Second Spanish Republic. In this same vein, he made many excellent adaptations of classic plays and narratives, both for adults and youth. Furthermore, in all his original dramatic creations he knew how to convey messages in a deep and clear social commitment without relinquishing his undeniable poetic inspiration.
Casona went into exile following the Spanish Civil War and, after passing through Mexico, settled for a long time in Argentina. In this country he enjoyed remarkable critical and commercial success. He did not return to Spain until 1962, where he remained until his death on September 17, 1965, in Madrid. Having been one of the most recognized figures of the Spanish, Mexican and South American scene, the alien's return provided him with a terrible disappointment, as the main authors and theater critics at the time considered his work outdated, the product of an era definitively finished.