Suetonius, in holding up a mirror to those Caesars of diverting legend, reflects not only them but ourselves: half-tamed creatures, whose great moral task is to hold in balance the angel and the monster within - for we are both, and to ignore this duality is to invite disaster.
SuetoniusAt a banquet Caligula was suddenly seized with a fit of helpless laughter. The consuls reclining next to him asked if they might share in the imperial merriment. Caligula, wiping the tears from his eyes, managed to gasp, "You'll never guess! It suddenly occurred to me that I had only to give a single nod, and both your throats would be cut on the spot."
Suetonius