While the sovereignty of Rome was confined to Italy, it was easy for the commonwealth to subsist: every soldier was at the same time a citizen; every Consul raised an army, and other citizens marched into the field under his successor: as their forces were not very numerous, such persons only were received among the troops as had possessions considerable enough to make them interested in the preservation of the city; the Senate kept a watchful eye over the conduct of the generals, and did not give them an opportunity of machinating anything to the prejudice of their country.

But after the legions had passed the Alps and crossed the sea, the soldiers whom the Romans had been obliged to leave during several campaigns in the countries they were subduing, lost insensibly that genius and turn of mind which characterized a Roman citizen; and the generals having armies and kingdoms at their disposal were sensible of their own strength, and would no longer obey.

The soldiers therefore began to acknowledge no superior but their general; to found their hopes on him only, and to view the city as from a great distance: they were no longer the soldiers of the republic, but of Sulla, of Marius, of Pompey, and of Cæsar. The Romans could no longer tell whether the person who headed an army in a province was their general or their enemy.

So long as the people of Rome were corrupted by their tribunes only, on whom they could bestow nothing but their power, the Senate could easily defend themselves, because they acted consistently and with one regular tenor, whereas the common people were continually shifting from the extremes of fury to the extremes of cowardice; but when they were enabled to invest their favorites with a formidable exterior authority, the whole wisdom of the Senate was baffled, and the commonwealth was undone.

The reason why free states are not so permanent as other forms of government is because the misfortunes and successes which happen to them generally occasion the loss of liberty; whereas the successes and misfortunes of an arbitrary government contribute equally to the enslaving of the people. A wise republic ought not to run any hazard which may expose it to good or ill fortune; the only happiness the several individuals of it should aspire after is to give perpetuity to their state.

If the unbounded extent of the Roman empire proved the ruin of the republic, the vast compass of the city was no less fatal to it.

The Romans had subdued the whole universe by the assistance of the nations of Italy, on whom they had bestowed various privileges at different times. Most of those nations did not at first set any great value on the freedom of the city of Rome, and some chose rather to preserve their ancient usages; but when this privilege became that of universal sovereignty—when a man who was not a Roman citizen was considered as nothing, and with this title was everything—the people of Italy resolved either to be Romans or die: not being able to obtain this by cabals and entreaties, they had recourse to arms; and rising in all that part of Italy opposite to the Ionian sea, the rest of the allies were going to follow their example. Rome, being now forced to combat against those who were, if I may be allowed the figure, the hands with which they shackled the universe, was upon the brink of ruin; the Romans were going to be confined merely to their walls: they therefore granted this so much wished-for privilege to the allies who had not yet been wanting in fidelity; and they indulged it, by insensible degrees, to all other nations.

But now Rome was no longer that city the inhabitants of which had breathed one and the same spirit, the same love for liberty, the same hatred of tyranny; a city in which a jealousy of the power of the Senate and of the prerogatives of the great (ever accompanied with respect) was only a love of equality. The nations of Italy being made citizens of Rome, every city brought thither its genius, its particular interests, and its dependence on some mighty protector: Rome, being now rent and divided, no longer formed one entire body, and men were no longer citizens of it but in a kind of fictitious way; as there were no longer the same magistrates, the same walls, the same gods, the same temples, the same burying-places, Rome was no longer beheld with the same eyes; the citizens were no longer fired with the same love for their country, and the Roman sentiments were obliterated.

Cities and nations were now invited to Rome by the ambitious, to disconcert the suffrages, or influence them in their own favor; the public assemblies were so many conspiracies against the state, and a tumultuous crowd of seditious wretches was dignified with the title of Comitia. The authority of the people and their laws—nay, that people themselves—were no more than so many chimeras; and so universal was the anarchy of those times that it was not possible to determine whether the people had made a law or not.

Authors enlarge very copiously on the divisions which proved the destruction of Rome; but their readers seldom discover those divisions to have been always necessary and inevitable. The grandeur of the republic was the only source of that calamity, and exasperated popular tumults into civil wars. Dissensions were not to be prevented; and those martial spirits which were so fierce and formidable abroad could not be habituated to any considerable moderation at home. Those who expect in a free state to see the people undaunted in war and pusillanimous in peace, are certainly desirous of impossibilities; and it may be advanced as a general rule that whenever a perfect calm is visible, in a state that calls itself a republic, the spirit of liberty no longer subsists.