α) An important point is to prove that the early Fathers held the Augustinian, _i.e._ Catholic view. It stands to reason that if these Fathers had taught a different doctrine, the Church would not have so vehemently rejected Pelagianism as an heretical innovation. Augustine himself insists on the novelty of the Pelagian teaching. “Such is the Pelagian heresy,” he says, “which is not an ancient one, but has only lately come into existence.”(275) And this view is confirmed by Pope Celestine I, who declares in his letter to the Bishops of Gaul (A. D. 431): “This being the state of the question, novelty should cease to attack antiquity.”(276) In fact the teaching of the Apostolic Fathers, although less explicit, agrees entirely with that of Augustine. Thus St. Irenaeus says: “As the dry earth, if it receives no moisture, does not bring forth fruit, so we, being dry wood, could never bear fruit for life without supernatural rain freely given.... The blessing of salvation comes to us from God, not from ourselves.”(277) The necessity of grace is indirectly inculcated by the Church when she petitions God to grant salutary graces to all men—a most ancient and venerable practice, which Pope St. Celestine explains as follows: “The law of prayer should determine the law of belief. For when the priests of holy nations administer the office entrusted to them, asking God for mercy, they plead the cause of the human race, and together with the whole Church ask and pray that the unbelievers may receive the faith, that the idolaters may be freed from the errors of their impiety, that the veil be lifted from the heart of the Jews, and they be enabled to perceive the light of truth, that the heretics may return to their senses by a true perception of the Catholic faith, that the schismatics may receive the spirit of reborn charity, that the sinners be granted the remedy of penance, and that the door of heavenly mercy be opened to the catechumens who are led to the sacraments of regeneration.”(278) In matters of salvation prayer and grace are correlative terms; the practice of the one implies the necessity and gratuity of the other.(279) β) That the Fathers not only conceived grace to be necessary for the cure of weakness induced by sin (_gratia sanans_) in a merely moral sense, but thought it to be metaphysically necessary for the communication of physical strength (_gratia elevans_), is evidenced by such oft-recurring similes as these: Grace is as necessary for salvation as the eye is to see, or as wings are to fly, or as rain is for the growth of plants. It will suffice to quote a passage from the writings of St. Chrysostom. “The eyes,” he says, “are beautiful and useful for seeing, but if they would attempt to see without light, all their beauty and visual power would avail them nothing. Thus, too, the soul is but an obstacle in its own way if it endeavors to see without the Holy Ghost.”(280)