58 Another Julianus of Marcelliana said: "If a man can serve two masters, God and mammon, then baptism also can serve two, the Christian and the heretic."
59. Truly, if it can serve the self-restrained and the covetous man, the sober and the drunken, the well-affectioned and the murderer, why should it not also serve the Christian and the heretic?— whom, indeed, it does not really serve; but it ministers to them, and is administered by them, for salvation to those who use it right, and for judgment to such as use it wrong.
Source: On Baptism, Against the Donatists (New Advent)