An Author easily persuades himself that the public opinion is still favorable to his labors; and I have now embraced the serious resolution of proceeding to the last period of my original design, and of the Roman Empire, the taking of Constantinople by the Turks, in the year one thousand four hundred and fifty-three. The most patient Reader, who computes that three ponderous 3 volumes have been already employed on the events of four centuries, may, perhaps, be alarmed at the long prospect of nine hundred years. But it is not my intention to expatiate with the same minuteness on the whole series of the Byzantine history. At our entrance into this period, the reign of Justinian, and the conquests of the Mahometans, will deserve and detain our attention, and the last age of Constantinople (the Crusades and the Turks) is connected with the revolutions of Modern Europe. From the seventh to the eleventh century, the obscure interval will be supplied by a concise narrative of such facts as may still appear either interesting or important. BENTINCK STREET, _March_ 1, 1782. 3 (return) [ The first six volumes of the octavo edition.] Preface To The First Volume. Diligence and accuracy are the only merits which an historical writer may ascribe to himself; if any merit, indeed, can be assumed from the performance of an indispensable duty. I may therefore be allowed to say, that I have carefully examined all the original materials that could illustrate the subject which I had undertaken to treat. Should I ever complete the extensive design which has been sketched out in the Preface, I might perhaps conclude it with a critical account of the authors consulted during the progress of the whole work; and however such an attempt might incur the censure of ostentation, I am persuaded that it would be susceptible of entertainment, as well as information. At present I shall content myself with a single observation. The biographers, who, under the reigns of Diocletian and Constantine, composed, or rather compiled, the lives of the Emperors, from Hadrian to the sons of Carus, are usually mentioned under the names of Ælius Spartianus, Julius Capitolinus, Ælius Lampridius, Vulcatius Gallicanus, Trebellius Pollio and Flavius Vopiscus. But there is so much perplexity in the titles of the MSS., and so many disputes have arisen among the critics (see Fabricius, Biblioth. Latin. l. iii. c. 6) concerning their number, their names, and their respective property, that for the most part I have quoted them without distinction, under the general and well-known title of the _Augustan History_. Preface To The Fourth Volume Of The Original Quarto Edition.