Antony, however, according to his custom, returned alone to his own cell, increased his discipline, and sighed daily as he thought of the mansions in… - Athanasius of Alexandria

For in other matters also which go to make up life, we shall find differences according to circumstances. For example, it is not right to kill, yet in war it is lawful and praiseworthy to destroy the enemy; accordingly not only are they who have distinguished themselves in the field held worthy of great honours, but monuments are put up proclaiming their achievements. So that the same act is at one time and under some circumstances unlawful, while under others, and at the right time, it is lawful and permissible. The same reasoning applies to the relation of the sexes. He is blessed who, being freely yoked in his youth, naturally begets children. But if he uses nature licentiously, the punishment of which the Apostle writes shall await whoremongers and adulterers.
For there are two ways in life, as touching these matters. The one the more moderate and ordinary, I mean marriage; the other angelic and unsurpassed, namely virginity. Now if a man choose the way of the world, namely marriage, he is not indeed to blame; yet he will not receive such great gifts as the other. For he will receive, since he too brings forth fruit, namely thirtyfold. But if a man embrace the holy and unearthly way, even though, as compared with the former, it be rugged and hard to accomplish, yet it has the more wonderful gifts: for it grows the perfect fruit, namely an hundredfold. So then their unclean and evil objections had their proper solution long since given in the divine Scriptures.

He gives them a share in His own Image, our Lord Jesus Christ, and makes them after His own Image and after His likeness: so that by such grace perceiving the Image, that is, the Word of the Father, they may be able through Him to get an idea of the Father, and knowing their Maker, live the happy and truly blessed life.

Athanasius contra mundum.