Memoires of Mr. Des-Ecotais: formerly stiled in the Church of Rome the most venerable Father Cassianus of Paris, priest and preacher of the Order of the Capucins. Or, The motives of his conversion. : Divided into two parts. I. That the doctrin of the now Roman church is not grounded neither upon the Holy Scripture; neither upon the belief of the primitive church or the authority of the Holy Fathers, which is more particularly and more evidently verified in the examination of the belief of Rome concerning the Eucharist. II. That the church of Rome is not the true church; that it doth not enjoy, as absolutely its own, out-shutting all other churches, neither the antiquity of the belief, neither the multitude of the people, neither the true and lawful succession of the bishops; that the authority thereof is not infallible, and that it is full of errors and corruptions.