Procopius, The Secret History — Chapters VI - X
“ And his nephew Justinian, who was still young, used to administer the entire government and he proved the author of calamities for the Romans — calamities so serious and so manifold that in all the history of the world probably no one previously had ever heard their equal. For he used to proceed with the lightest of hearts to the unjust murder of men and the seizure of other men's money, and for him it was nothing that countless thousands of men should have been destroyed, though they had given him no grievance. ”
