In the modern world it is sometimes necessary to remind people of their citizenship, but the Roman never forgot the greatness of his inheritance. When St. Paul, bound with thongs and condemned to be scourged, declared, ‘I am Roman born,’ the Captain of the Guard, who had only gained his citizenship by paying a large sum of money, was afraid of the prisoner on whom he had laid hands without a trial. To be a Roman, however apparently poor and defenceless, was to walk the earth protected by a shield that none might set aside save at great peril. Not to be a Roman, however rich and of high standing, was to pass in Roman eyes as a ‘barbarian’, a creature of altogether inferior quality and repute. ‘Be it thine, O Roman,’ says Virgil, the greatest of Latin poets, ‘to govern the nations with thy imperial rule’: and such indeed was felt by Romans to be the destiny of their race. Stretching on the west through Spain and Gaul to the Atlantic, that vast ‘Sea of Darkness’ beyond which according to popular belief the earth dropped suddenly into nothingness, the outposts of the Empire in the east looked across the plains of Mesopotamia towards Persia and the kingdoms of central Asia. Babylon ‘the Wondrous’, Syria, and Palestine with its turbulent Jewish population, Egypt, the Kingdom of the Pharaohs long ere Romulus the City-builder slew his brother, Carthage, the Queen of Mediterranean commerce, all were now Roman provinces, their lustre dimmed by a glory greater than they had ever known. [Sidenote: Roman Trade Routes] The Mediterranean, once the battle-ground of rival Powers, had become an imperial lake, the high road of the grain ships that sailed perpetually from Spain and Egypt to feed the central market of the world; for Rome, like England to-day, was quite unable to satisfy her population from home cornfields. The fleets that brought the necessaries of life convoyed also shiploads of oriental luxuries, silks, jewels, and perfumes, transported from Ceylon and India in trading-sloops to the shores of the Red Sea, and thence by caravans of camels to the port of Alexandria. Other trade routes than the Mediterranean were the vast network of roads that, like the threads of a spider’s web, kept every part of the Empire, however remote, in touch with the centre from which their common fate was spun. At intervals of six miles were ‘post-houses’, provided each with forty or more horses, that imperial messengers, speeding to or from the capital with important news, might dismount and mount again at the different stages, hastening on their way with undiminished speed.