2. The first point, then, that he lays down in his letter is the statement, "that we find fault with them for the repetition of baptism, while we ourselves pollute our souls with a laver stained with guilt." But to what profit is it that I should reproduce all his insulting terms? For, since it is one thing to strengthen proofs, another thing to meddle with abusive words by way of refutation, let us rather turn our attention to the mode in which he has sought to prove that we do not possess baptism, and that therefore they do not require the repetition of what was already present, but confer what hitherto was wanting. For he says: "What we look for is the conscience of the giver to cleanse that of the recipient." But supposing the conscience of the giver is concealed from view, and perhaps defiled with sin, how will it be able to cleanse the conscience of the recipient, if, as he says, "what we look for is the conscience of the giver to cleanse that of the recipient?" For if he should say that it makes no matter to the recipient what amount of evil may lie concealed from view in the conscience of the giver, perhaps that ignorance may have such a degree of efficacy as this, that a man cannot be defiled by the guilt of the conscience of him from whom he receives baptism, so long as he is unaware of it. Let it then be granted that the guilty conscience of his neighbour cannot defile a man so long as he is unaware of it, but is it therefore clear that it can further cleanse him from his own guilt?