Coincidentally I came upon two online features this week which pertained to the nature of Roman Imperial rulership.
The first was an article in the Times Literary Supplement by Dame Mary Beard in which she reflects upon re-reading Fergus Millar’s The Emperor in the Roman World (1977) and on the historiographic issues that the book generated. It is not my subject area but I think Professor Beard makes good points in what she writes. Her article can be seen at How to be a Roman emperor | Essay by Mary Beard
The second was another chance find, a piece from last year on Artsy.net about Roman sculpture which can be viewed at 7 Ancient Roman Sculptures You Need to Know One of the seven examples that is used is, I imagine, the quintessential portrayal of the Emperor Augustus. The accompanying notes seem to tie in with the Beard critique of Millar, and I have copied them, together with the image and posted them below
Augustus of Primaporta, perhaps an early first century copy of a bronze statue of circa 20 BC.
Marble, originally coloured.
Musei Vaticani, Rome
There is much more about the statue in the Wikipedia entry at Augustus of Prima Porta
A reconstruction of the colouring of the statue