The Franciscan Third Order was always the principal one, and it received a great impetus and a renewed vogue from Pope Leo XIII in 1883, in his approval of a new Rule for the seculars. In 1901 Paul Sabatier published a "Rule of Life of the Brothers and Sisters of Penance," which probably contained, with additions, the substance of the original Rule of 1221. It prescribed severe simplicity of dress and of life, and certain abstinences and prayers and other religious exercises, and forbade the frequentation of the theatre, the bearing of arms and the taking of oaths except when administered by magistrates.