I must confess, that the preparations to his history, or the Prolegomena, as they are called, are very large, and the digressions in it are exceeding frequent. But as to his preparatives, they were but necessary to make the reader comprehend the drift and design of his undertaking: and the digressions are also so instructive, that we may truly say, they transcend the profit which we receive from the matter of fact. Upon the whole, we may conclude him to be a great talker; but we must grant him to be a prudent man. We can spare nothing of all he says, it is so much to our improvement; and if the rest of his history had remained to us, in all probability it would have been more close: for we can scarce conceive what was left in nature for him to add, he has so emptied almost all the common-places of digressions already; or if he could have added any thing, those observations might have been as useful and as necessary as the rest which he has given us, and that are descended to our hands. I will say nothing farther of the “Excerpta,” which (as Casaubon thinks,) are part of that epitome which was begun to be made by Marcus Brutus, but never finished; nor of those embassies which are collected and compiled by the command of Constantine the Great; because neither of them are translated in this work. And whether or no they will be added in another impression, I am not certain; the translator of these five books having carried his work no farther than it was perfect. He, I suppose, will acquaint you with his own purpose, in the preface which I hear he intends to prefix before Polybius. Let us now hear Polybius himself describing an accomplished historian, wherein we shall see his own picture, as in a glass, reflected to him, and given us afterwards to behold in the writing of this history. Plato said of old, that it would be happy for mankind, if either philosophers administered the government, or that governors applied themselves to the study of philosophy. I may also say, that it would be happy for history, if those who undertake to write it, were men conversant in political affairs; who applied themselves seriously to their undertaking, not negligently, but as such who were fully persuaded that they undertook a work of the greatest moment, of the greatest excellency, and the most necessary for mankind; establishing this as the foundation whereon they are to build, that they can never be capable of performing their duty as they ought, unless they have formed themselves beforehand to their undertaking, by prudence, and long experience of affairs; without which endowments and advantages, if they attempt to write a history, they will fall into a various and endless labyrinth of errors.