For indeed fornications and adulteries come not from any other cause, than from young men’s being unrestrained. For if he have a prudent wife, he will take care of house and honor and character. “But he is young,” you say. I know it too. For if Isaac was forty years old when he took his bride, passing all that time of his life in virginity, much more ought young men under grace to practise this self-restraint. But oh what grief! Ye do not endure to take care of their chastity, but ye overlook their disgracing, defiling themselves, becoming accursed; as though ye knew not that the profit of marriage is to preserve the body pure, and if this be not so, there is no advantage of marriage. But ye do the contrary; when they are filled with countless stains, then ye bring them to marriage without purpose and without fruit.