30 You also who have not yet made this vow, who are able to receive it, receive it. Run with perseverance, that you may obtain. Take ye each his sacrifices, and enter ye into the courts of the Lord, not of necessity, having power over your own will. For not as, “You shall not commit adultery, You shall not kill,” can it so be said, You shall not wed. The former are demanded, the latter are offered. If the latter are done, they are praised: unless the former are done, they are condemned. In the former the Lord commands us what is due; but in the latter, if you shall have spent any thing more, on His return He will repay you. Think of (whatever that be) within His wall “a place named, much better than of sons and of daughters.” Think of “an eternal name” there. Who unfolds of what kind that name shall be? Yet, whatever it shall be, it shall be eternal. By believing and hoping and loving this, you have been able, not to shun marriage, as forbidden, but to fly past it, as allowed.
Source: On Holy Virginity (New Advent)