Theodor Mommsen,
The History of Rome, Book III
“ Rome began to become the capital of the Mediterranean states, and Italy to become the suburbs of Rome; the Romans had no wish to be anything more, and in their opulent indifference contented themselves with a passive commerce, such as every city which is nothing more than a capital necessarily carries on—they possessed, forsooth, money enough to pay for everything which they needed or did not need. On the other hand the most unproductive of all sorts of business, the traffic in money and the farming of the revenue, formed the true mainstay and stronghold of the Roman economy. ”
