Fr Simon examines the Pentecostal movement, what may be good and genuine in it and what can possibly be integrated into orthodox Catholicism. He sees the Pentecostals as primarily a modern mystical group, seeking experience of God the Holy Spirit. However, he is extremely critical of their doctrine of the 'baptism of the Holy Spirit' which can in no ways be accepted by Catholics. Instead we can only think of a continued conversion and discovery of the gifts imbued in us at the time of our water baptism. Of prayer groups he is positive and also towards speaking in tongues, albeit with precautions and discernment in both. Overall he is quite positive to what would today be called the 'charismatic movement' in the Catholic Church as a movement of genuine lay mysticism and contemplation, which is something we must remember ALL are called towards; there is a universal call to holiness, as the Second Vatican Council stressed.