_And while I pretend to a thing so solemn, I cannot but premise I should stand convicted of a double Imposture, to forge a Story, and then preach Repentance to the Reader from a Crime greater than that I would have him repent of: endeavouring by a Lye to correct the Reader's Vices, and sin against Truth to bring the Reader off from sinning against Sence._ _Upon this score, tho' the Undertaking be very difficult among such an infinite variety of Circumstances, to keep, exactly within the bounds of Truth; yet I have this positive Assurance with me, that in all the subsequent Relation, if the least Mistake happen, it shall not be mine._ _If I judge right, 'Tis the Duty of an Historian to set every thing in its own Light, and to convey matter of fact upon its legitimate Authority, and no other: I mean thus, (for I wou'd be as explicit as I can) That where a Story is vouch'd to him with sufficient Authority, he ought to give the World the Special Testimonial of its proper Voucher, or else he is not just to the Story: and where it comes without such sufficient Authority, he ought to say so; otherwise he is not just to himself. In the first Case he injures the History, by leaving it doubtful where it might be confirm'd past all manner of question; in the last he injures his own Reputation, by taking upon himself the Risque, in case it proves a Mistake, of having the World charge him with a Forgery._ _And indeed, I cannot but own 'tis just, that if I tell a Story in Print for a Truth which proves otherwise, unless I, at the same time, give proper Caution to the Reader, by owning the Uncertainty of my Knowledge in the matter of fact, 'tis I impose upon the World: my Relater is innocent, and the Lye is my own._ _I make all these preliminary Observations, partly to inform the Reader, that I have not undertaken this Work without the serious Consideration of what I owe to Truth, and to Posterity; nor without a Sence of the extraordinary Variety and Novelty of the Relation._ _I am sensible, that the want of this Caution is the Foundation of that great Misfortune we have in matters of ancient History; in which the Impudence, the Ribaldry, the empty Flourishes, the little Regard to Truth, and the Fondness of telling a strange Story, has dwindled a great many valuable Pieces of ancient History into meer Romance._ _How are the Lives of some of our most famous Men, nay the Actions of whole Ages, drowned in Fable? Not that there wanted Pen-men to write, but that their Writings were continually mixt with such Rhodomontades of the Authors that Posterity rejected them as fabulous._