Many of those works were erected at private expense, and almost all were intended for public benefit.
It is natural to suppose that the greatest number, as well as the most considerable of the Roman edifices, were raised by the emperors, who possessed so unbounded a command both of men and money.

Augustus was accustomed to boast that he had found his capital of brick, and that he had left it of marble.

[64] The strict economy of Vespasian was the source of his magnificence.

The works of Trajan bear the stamp of his genius.

The public monuments with which Hadrian adorned every province of the empire, were executed not only by his orders, but under his immediate inspection.