Cassius Dio Cocceianus, Dio's Rome, Volume 4
“ Examining the merits of the situation I deem it most just for you to manage your own affairs: examining the advantages, I regard it as most advantageous to myself to be free from trouble, from jealousy, from plots, and for you to conduct a free government with moderation and love: examining where the glory lies (for the sake of which men often choose to enter war and danger) , will it not add most to my reputation to resign so great a dominion? Will it not be most glorious to leave so exalted a sovereignty and voluntarily become a plain citizen? ”
