Whensoever he gives us the account of any considerable action, he never fails to tell us why it succeeded, or for what reason it miscarried; together with all the antecedent causes of its undertaking, and the manner of its performance; all which he accurately explains: of which I will select but some few instances, because I want leisure to expatiate on many. In the fragments of the seventeenth book he makes a learned dissertation concerning the Macedonian phalanx, or gross body of foot, which was formerly believed to be invincible, till experience taught the contrary by the success of the battle which Philip lost to the commonwealth of Rome; and the manifest and most certain causes are therein related, which prove it to be inferior to the Roman legions. When also he had told us in his former books, of the three great battles wherein Hannibal had overthrown the Romans, and the last at Cannæ, wherein he had in a manner conquered that republic, he gives the reasons of every defeat, either from the choice of ground, or the strength of the foreign horse in Hannibal’s army, or the ill-timing of the fight on the vanquished side. After this, when he describes the turn of fortune on the part of the Romans, you are visibly conducted upwards to the causes of that change, and the reasonableness of the method which was afterwards pursued by that commonwealth, which raised it to the empire of the world. In these and many other examples, which for brevity are omitted, there is nothing more plain than that Polybius denies all power to fortune, and places the sum of success in Providence; συμβαινογγων τὑχην ἁιτιασθι φαυλον, indeed, are his words, It is a madness to make fortune the mistress of events, because in herself she is nothing, can rule nothing, but is ruled by prudence. So that whenever our author seems to attribute any thing to chance, he speaks only with the vulgar, and desires so to be understood.
But here I must make bold to part company with Casaubon for a moment. He is a vehement friend to any author with whom he has taken any pains; and his partiality to Persius, in opposition to Juvenal, is too fresh in my memory to be forgotten.26 Because Polybius will allow nothing to the power of chance, he takes an occasion to infer, that he believed a providence; sharply inveighing against those who have accused him of atheism. He makes Suidas his second in this quarrel; and produces his single evidence, and that but a bare assertion, without proof, that Polybius believed, with us Christians, God administered all human actions and affairs. But our author will not be defended in this case; his whole history reclaims to that opinion. When he speaks of Providence, or of any divine admonition, he is as much in jest, as when he speaks of fortune; it is all to the capacity of the vulgar. Prudence was the only divinity which he worshipped, and the possession of virtue the only end which he proposed. If I would have disguised this to the reader, it was not in my power. The passages which manifestly prove his irreligion are so obvious that I need not quote them. Neither do I know any reason why Casaubon should enlarge so much in his justification; since to believe false gods, and to believe none, are errors of the same importance. He who knew not our God, saw through the ridiculous opinions of the heathens concerning theirs; and not being able without revelation to go farther, stopped at home in his own breast, and made prudence his goddess, truth his search, and virtue his reward. If Casaubon, like him, had followed truth, he would have saved me the ungrateful pains of contradicting him; but even the reputation of Polybius, if there were occasion, is to be sacrificed to truth, according to his own maxim.
As for the wisdom of our author, whereby he wonderfully foresaw the decay of the Roman empire, and those civil wars which turned it down from a commonwealth to an absolute monarchy, he who will take the pains to review this history will easily perceive, that Polybius was of the best sort of prophets, who predict from natural causes those events which must naturally proceed from them. And these things were not to succeed even in the compass of the next century to that wherein he lived, but the person was then living who was the first mover towards them; and that was that great Scipio Africanus, who, by cajoling the people to break the fundamental constitutions of the government in his favour, by bringing him too early to the consulship,27 and afterwards by making their discipline of war precarious, first taught them to devolve the power and authority of the senate into the hands of one, and then to make that one to be at the disposition of the soldiery; which though he practised at a time when it was necessary for the safety of the commonwealth, yet it drew after it those fatal consequences, which not only ruined the republic, but also in process of time, the monarchy itself. But the author was too much in the interests of that family, to name Scipio; and therefore he gives other reasons, to which I refer the reader, that I may avoid prolixity.
By what degrees Polybius arrived to this height of knowledge, and consummate judgment in affairs, it will not be hard to make the reader comprehend; for presupposing in him all that birth or nature could give a man, who was formed for the management of great affairs, and capable of recording them, he was likewise entered from his youth into those employments which add experience to natural endowments; being joined in commission with his father Lycortas, and the younger Aratus, before the age of twenty, in an embassy to Egypt: after which he was perpetually in the business of his own commonwealth, or that of Rome. So that it seems to be one part of the Roman felicity, that