But, after all, a somewhat sharp distinction should be drawn between histories such as these, which ostensibly describe the incidents of a particular period, and more comprehensive treatises, which set the explicit task of dealing with the history of all nations in all times.
Of the works of this latter class,—World Histories proper,—the oldest one that has come down to us is at the same time probably the most comprehensive in scope, and the most extensive in point of matter, of any that was written in ancient times. This is the so-called Historical Library of Diodorus the Sicilian. Diodorus was a Greek, a native of Sicily, who lived during the time of Julius Cæsar and of Augustus. He set himself the explicit task of writing a comprehensive history of the world, and he devoted thirty years to the accomplishment of this task. This history, as originally written, comprised forty books, which treated of the entire history of mankind from the earliest times to the age of Augustus. Diodorus recognised the vagueness of early chronology, and he made no attempt to estimate the exact age of the world, but he computes the time covered by what he considers the historic period proper, in the following terms:
“According to Apollodorus, we have accounted fourscore years from the Trojan War to the return of Heraclides: from thence to the first olympiad, three hundred and twenty-eight years, computing the times from the Lacedæmonian kings: from the first olympiad to the beginning of the Gallic War (where our history ends) are seven hundred and thirty years: so that our whole work (comprehended in forty books) is an history which takes in the affairs of eleven hundred and thirty-eight years, besides those times that preceded the Trojan War.”
In his preface Diodorus further explains the exact scope of his work and the precise division in the books in the following words:
“Our first six books comprehend the affairs and mythologies of the ages before the Trojan War, of which the three first contain the barbarian, and the next following almost all the Grecian antiquities. In the eleven next after these, we have given an account of what has been done in every place from the time of the Trojan War till the death of Alexander. In the three and twenty books following, we have set forth all other things and affairs, till the beginning of the war the Romans made upon the Gauls; at which time Julius Cæsar, the emperor (who upon the account of his great achievements was surnamed Divus), having subdued the warlike nations of the Gauls, enlarged the Roman Empire, as far as to the British Isles; whose first acts fall in with the first year of the hundred and eightieth olympiad, when Herodes was chief magistrate at Athens. But as to the limitations of times contained in the work, we have not bound those things that happened before the Trojan War within any certain limits, because we could not find any foundation whereon to rely with any certainty.”
Of these forty books only fifteen have come down to us intact, namely, the first five, which carry down the history only to the Trojan wars, and books eleven to twenty, which cover the period from the invasion of Greece by Xerxes to the subjugation of Greece by the Romans. The remaining books are represented by considerable fragments, which, however, even in the aggregate, are insignificant in bulk as compared with the fifteen books that are preserved entire.
Considering the time when it was written, this work of Diodorus was really an extraordinary production, though there has been a tendency on the part of the modern critic to dwell rather upon its defects than its merits. It has indeed become quite the fashion to speak of Diodorus as a weak-minded, prejudiced person, who gathered together materials for history from all sources indiscriminately, and gave them to the world, true and false together, quite unsifted by criticism. Such an estimate, however, does Diodorus a very great injustice, as the briefest perusal of his work must suffice to demonstrate. Indeed, it is perhaps not saying too much to assert that one would be nearer the truth were he to accept an estimate by Pliny, who affirms that Diodorus was the first of the Greeks who wrote seriously and avoided trifles. That Diodorus did write seriously, his work clearly testifies; that he largely avoided trifles, is shown by the mass of matter which he crowded into a comparatively small space; and that he was far from using his materials without exercising selective judgment, should be evident to any one who scans these materials themselves. It is quite true that he made many mistakes. He sometimes accepted as fact what was only fable, his chronologies are not always secure, his narratives of events not always photographically accurate. But consider the task he had set himself. He was endeavouring to write a history of the entire world so far as known in his day and generation, including within the scope of his narrative all the leading events of all the nations of the globe as known in that day. No man can perform such a task, even in this day of multiplied records and edited authorities, without making mistakes.
Whoever attempts to write history philosophically is brought, sooner or later, face to face with the fact that all historical records are woven through and through with fiction. To separate the threads of truth from the threads of fable is the task of critical judgment. It will be perfectly clear to any one who considers the case, that in making such selection the historian of any generation must be biased and influenced by the prejudices and preconceptions of his time. From such prejudices and preconceptions Diodorus was, of course, not free. He looked out upon the world with eyes of the first century B.C., not with eyes of the twentieth century A.D. That century, no less than this,—perhaps not more than this,—was an age of faith and superstition; but the faith of that time was not the faith of this time; the superstitions of the Greek and Roman were not our superstitions. They were a credulous people; we are a credulous people: but the exact type of their credulity differed in many ways from the type of our credulity.
In judging Diodorus, then, one must judge him as a Roman of the first century B.C., not as a European of the twentieth century A.D. And if we bear this in mind, we shall find, after scanning his pages, that Diodorus was by no means marked among his fellows by simple credulity of the unquestioning type which accepts whatever is told it without subjecting it to criticism. Diodorus, to be sure, tells us fabulous tales as to the origin of the world and the creation of its various peoples; but he explicitly forewarns us that he tells these tales, not as matters of his own belief, but in order to make an historical record of the opinions current among the different nations themselves as to their own origin.
These tales seem to us fabulous, grotesque, absurd; but we have no reason to doubt that many of them seemed equally mythical to Diodorus himself; and modern criticism should not forget that there is one other myth tale of the creation of the world and the origin of a particular race, which, had Diodorus known it, he would doubtless have narrated with the rest, and viewed with the same scepticism which he shows towards the others, as being fabulous, grotesque, and absurd, but which would have been accepted by the critics of all Christendom, in every age prior to our own, as the authentic historical record of the actual creation of the earth, and as the true account of its chosen people.