19 But lest any should think that of two works, the good and the better, the rewards will be equal, on this account it was necessary to treat against those, who have so interpreted that saying of the Apostle, “But I think that this is good by reason of the present necessity,” as to say that virginity is of use not in order to the kingdom of heaven, but in order to this present time: as though in that eternal life, they, who had chosen this better part, would have nothing more than the rest of men.
And in this discussion when we came to that saying of the same Apostle, “But such shall have tribulation of the flesh, but I spare you;” we fell in with other disputants, who so far from making marriage equal to perpetual virginity, altogether condemned it. For whereas both are errors, either to equal marriage to holy virginity, or to condemn it: by fleeing from one another to excess, these two errors come into open collision, in that they have been unwilling to hold the mean of truth: whereby, both by sure reason and authority of holy Scriptures, we both discover that marriage is not a sin, and yet equal it not to the good either of virginal or even of widowed chastity.
Some forsooth by aiming at virginity, have thought marriage hateful even as adultery: but others, by defending marriage, would have the excellence of perpetual continence to deserve nothing more than married chastity; as though either the good of Susanna be the lowering of Mary: or the greater good of Mary ought to be the condemnation of Susanna.
Source: On Holy Virginity (New Advent)