Herodian, History of the Empire From the Death of Marcus…
“ Delighted with the emperor's antics, the barbarians became very fond of him, as did the Roman soldiers also, particularly because of his lavish gifts of money but also because he always played the soldier's part. If a ditch had to be dug anywhere, the emperor was the first man to dig; if it were necessary to bridge a stream or pile up a high rampart, it was the same; in every task involving labor of hand or body, the emperor was first man to the job. ”
