"The articles by Bro. Frank Duff are, without the slightest doubt, together the mightiest written contribution ever made as a help to pastoral work, whether of priests or laity. They penetrate with a depth of insight, which can come only from a speclnl charism of the Holy Spirit, to the very heart of the nature of the apostolate and its practical accomplishments. One can say of these splendid essays what one can say with truth of the documents of the Second Vatican Council that if they were to be fully implemented a new golden age would dawn for the Church all over the world." - V. Rev. Francis. J. Ripley.