Thomas Aquinas

“ Further, whatever declines from the mean of virtue is apparently sinful. Now virginity declines from the mean of virtue, since it abstains from all venereal pleasures: for the Philosopher says (Ethic. ii, 2) , that "he who revels in every pleasure, and abstains from not even one, is intemperate: but he who refrains from all is loutish and insensible." Therefore virginity is something sinful. ”

“ Secondly, a thing may be most excellent simply, and in this way virginity is not the most excellent of the virtues. Because the end always excels that which is directed to the end; and the more effectively a thing is directed to the end, the better it is. ”

“ The common good takes precedence of the private good, if it be of the same genus: but it may be that the private good is better generically. It is thus that the virginity that is consecrated to God is preferable to carnal fruitfulness. ”

“ Accordingly the precept of natural law which binds man to eat must needs be fulfilled by each individual, otherwise the individual cannot be sustained. On the other hand, the precept of procreation regards the whole multitude of men, which needs not only to multiply in body, but also to advance spiritually. Wherefore sufficient provision is made for the human multitude, if some betake themselves to carnal procreation, while others abstaining from this betake themselves to the contemplation of Divine things, for the beauty and welfare of the whole human race. ”

“ The person who, beside the dictate of right reason, abstains from all pleasures through aversion, as it were, for pleasure as such, is insensible as a country lout. But a virgin does not refrain from every pleasure, but only from that which is venereal: and abstains therefrom according to right reason, as stated above. Now the mean of virtue is fixed with reference, not to quantity but to right reason, as stated in Ethic. ”

“ It must be confessed that the fruitfulness of the flesh, even of those women who in these times seek naught else from marriage but children in order to make them servants of Christ, cannot compensate for lost virginity. ”

“ Now to keep oneself free from the experience of venereal pleasure has an excellence of its own deserving of greater praise than keeping oneself free from inordinate venereal pleasure. Wherefore virginity is a special virtue being related to chastity as magnificence to liberality.
Reply to Objection 1: Men have from their birth that which is material in virginity, namely integrity of the flesh and freedom from venereal experience. ”

“ Therefore just as it would be a sin to abstain from all food, as this would be to act counter to the good of the individual, so too it is a sin to abstain altogether from the act of procreation, for this is to act against the good of the species. ”

“ Of these goods those that are external are directed to those which belong to the body, and those which belong to the body are directed to those which belong to the soul; and furthermore those which belong to the active life are directed to those which belong to the life of contemplation. ”

“ Thus too in an army, some take sentry duty, others are standard-bearers, and others fight with the sword: yet all these things are necessary for the multitude, although they cannot be done by one person. ”