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He, however, who gave me the grace to repent, must also give me the power to persevere, lest by repeating my sins I should end up being worse than I was before. Woe to me then, repentant though I be, if he without whom I can do nothing should suddenly withdraw his supporting hand. I really mean nothing; of myself I can achieve neither repentance nor perseverance. . .. For these various reasons I must confess that I am not entirely satisfied with the first grace by which I am enabled to repent of my sins; I must have the second as well, and so bear fruits that befit repentance, that I may not return like the dog to its vomit.