Saint Augustine 
Of the Good of Marriage [EPUB ebook] 

His treatise, and the following, were written against somewhat that still remained of the heresy of Jovinian. S. Aug. mentions this error in b. ii. c. 23, de Nuptiis et Conc. Jovinianus, he says, who a few years since tried to found a new heresy, said that the Catholics favored the Manichæans, because in opposition to him they preferred holy Virginity to Marriage.