13 And so, as truly worthy the name of Victor, he has subdued the twofold race of barbarians; soothing the savage tribes of men by prudent embassies, compelling them to know and acknowledge their superiors, and reclaiming them from a lawless and brutal life to the governance of reason and humanity; at the same time that he proved by the facts themselves that the fierce and ruthless race of unseen spirits had long ago been vanquished by a higher power. For he who is the preserver of the universe had punished these invisible spirits by an invisible judgment: and our emperor, as the delegate of the Supreme Sovereign, has followed up the victory, bearing away the spoils of those who have long since died and mouldered into dust, and distributing the plunder with lavish hand among the soldiers of his victorious Lord.
Source: Oration in Praise of Constantine (New Advent)