St. Charles of Sezze was a Franciscan mystic and stigmatist of the 17th century. Although he was quite unlettered, still, through the ever increasing influence of the Holy Spirit he wrote books that number in size, and content make him one of the greatest mystical writers of the Church, ranking with St. John of the Cross and St. Teresa of Avila. The canonization of St. Charles after his having remained unknown for several centuries should serve to...