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 because she became infected with the vices which belong to maritime cities, which I just now briefly enumerated. But yet, notwithstanding these vices, they have one great advantage, and one which is of universal application, namely, that there is a great facility for new inhabitants flocking to them. And, again, that the inhabitants are enabled to export and send abroad the produce of their native lands to any nation they please, which offers them a market for their goods. V. By what divine wisdom, then, could Romulus embrace all the benefits that could belong to maritime cities, and at the same time avoid the dangers to which they are exposed, except, as he did, by building his city on the bank of an inexhaustible river, whose equal current discharges itself into the sea by a vast mouth, so that the city could receive all it wanted from the sea, and discharge its superabundant commodities by the same channel? And in the same river a communication is found by which it not only receives from the sea all the productions necessary to the conveniences and elegances of life, but those also which are brought from the inland districts. So that Romulus seems to me to have divined and anticipated that this city would one day become the centre and abode of a powerful and opulent empire; for there is no other part of Italy in which a city could be situated so as to be able to maintain so wide a dominion with so much ease. VI. As to the natural fortifications of Rome, who is so negligent and unobservant as not to have them depicted and deeply stamped on his memory? Such is the plan and direction of the walls, which, by the prudence of Romulus and his royal successors, are bounded on all sides by steep and rugged hills; and the only aperture between the Esquiline and Quirinal mountains is enclosed by a formidable rampart, and surrounded by an immense fosse. And as for our fortified citadel, it is so secured by a precipitous barrier and enclosure of rocks, that, even in that horrible attack and invasion of the Gauls, it remained impregnable and inviolable. Moreover, the site which he selected had also an abundance of fountains, and was healthy, though it was in the midst of a pestilential region; for there are hills which at once create a current