"A Society Without God Ends Up as a Society Against Man."
Father Larranaga is the author of an incredible biography of St. Francis: Brother Francis of Assisi. It is a deeply spiritual and deeply psychological work full of insights into Francis' inner life. He also has written a life of Christ and a life of Mary, but I've never been able to get my hands on them.
I don't know too much about the Prayer and Life Workshops he founded, but he outlines them a bit in Transfiguration, a short treatise on prayer. The movement seems to simply be about teaching people to pray--as worthy an apostolate as there can be.
Cuando nos comunicamos en el idioma de Dios no existe contradiccion, Padre Larranaga expone el Catolicismo haciendo enfasis en la etimologia de su significado: Universal. En verdad, la elocuencia de sus palabras, la forma en que emite el mensaje en sus escritos abarca sin dejar vacios [sin importar religion] el verdadero sentido de relacionarse con Dios.