Pacem in Terris is the famous encyclical of Blessed John XXIII. As I’ve stated before Pope John was my favorite Pope up until now. When former Pope Benedict decided to resign i prayed that his replacement would be a man like Pope John XXIII. So far I have not been disappointed. This video that came from the Justice, Peace and Integrity of Creation website of the United States Secular Franciscans is a good synopsis of the encyclical. Pope John XXIII was a Secular Franciscan and there is no doubt that Pacem in Terris is evidence of that.