The abuse of aristocracy led to the civil wars and the triumvirate. Sulla, Julius Cæsar and Augustus became in fact real monarchs; and finally, under the despotism of Tiberius, the State was dissolved. Roman history then confirms, instead of invalidating, the principle I have laid down. [2] Omnes enim et habentur et dicuntur tyranni, qui potestate utuntur perpetua in ea civitate quæ libertate usa est (Cornelius Nepos, _Life of Miltiades_). [For all those are called and considered tyrants, who hold perpetual power in a State that has known liberty.] It is true that Aristotle (_Nicomachean Ethics_, Book viii, chapter x) distinguishes the tyrant from the king by the fact that the former governs in his own interest, and the latter only for the good of his subjects; but not only did all Greek authors in general use the word _tyrant_ in a different sense, as appears most clearly in Xenophon's _Hiero_, but also it would follow from Aristotle's distinction that, from the very beginning of the world, there has not yet been a single king. CHAPTER XI THE DEATH OF THE BODY POLITIC Such is the natural and inevitable tendency of the best constituted governments. If Sparta and Rome perished, what State can hope to endure for ever? If we would set up a long-lived form of government, let us not even dream of making it eternal. If we are to succeed, we must not attempt the impossible, or flatter ourselves that we are endowing the work of man with a stability of which human conditions do not permit. The body politic, as well as the human body, begins to die as soon as it is born, and carries in itself the causes of its destruction. But both may have a constitution that is more or less robust and suited to preserve them a longer or a shorter time. The constitution of man is the work of nature; that of the State the work of art. It is not in men's power to prolong their own lives; but it is for them to prolong as much as possible the life of the State, by giving it the best possible constitution. The best constituted State will have an end; but it will end later than any other, unless some unforeseen accident brings about its untimely destruction. The life-principle of the body politic lies in the sovereign authority. The legislative power is the heart of the State; the executive power is its brain, which causes the movement of all the parts. The brain may become paralysed and the individual still live. A man may remain an imbecile and live; but as soon as the heart ceases to perform its functions, the animal is dead. The State subsists by means not of the laws, but of the legislative power. Yesterday's law is not binding to-day; but silence is taken for tacit consent, and the Sovereign is held to confirm incessantly the laws it does not abrogate as it might. All that it has once declared itself to will it wills always, unless it revokes its declaration.