The Annals of Fabius Pictor commenced with the foundation of the city, and brought down the series of Roman affairs to the author's own time--that is, to the end of the second Punic war. We are informed by Dionysius of Halicarnassus, that for the great proportion of events which preceded his own age, Fabius Pictor had no better authority than vulgar tradition(139). He probably found, that if he had confined himself to what was certain in these early times, his history would have been dry, insipid, and incomplete. This may have induced him to adopt the fables, which the Greek historians had invented concerning the origin of Rome, and to insert whatever he found in the family traditions, however contradictory or uncertain. Dionysius has also given us many examples of his improbable narrations--his inconsistencies--his negligence in investigating the truth of what he relates as facts--and his inaccuracy in chronology. "I cannot refrain," says he, when speaking of the age of Tarquinius Priscus, "from blaming Fabius Pictor for his little exactness in chronology(140);" and it appears from various other passages, that all the ancient history of Fabius which was not founded on hearsay, was taken from Greek authors, who had little opportunity of being informed of Roman affairs, and had supplied their deficiency in real knowledge, by the invention of fables. In particular, as we are told by Plutarch(141), he followed an obscure Greek author, Diocles the Peparethian, in his account of the foundation of Rome, and from this tainted source have flowed all the stories concerning Mars, the Vestal, the Wolf, Romulus, and Remus.
It is thus evident, that no great reliance can be placed on the history given by Fabius Pictor, of the events which preceded his own age, and which happened during a period of 500 years from the building of the city; but what must be considered as more extraordinary and lamentable, is, that although a senator, and of a distinguished family, he gave a prejudiced and inaccurate account of affairs occurring during the time he lived, and in the management of which he had some concern. Polybius, who flourished shortly after that time, and was at pains to inform himself accurately concerning all the events of the second Punic war, apologizes for quoting Fabius on one occasion as an authority. "It will perhaps be asked," says he, "how I came to make mention of Fabius: It is not that I think his relation probable enough to deserve credit: What he writes is so absurd, and has so little appearance of truth, that the reader will easily remark, without my taking notice of it, the little reliance that is to be placed on that author, whose inconsistency is palpable of itself. It is, therefore, only to warn such as shall read his history, not to judge by the title of the book, but by the things it contains--for there are many people, who, considering the author more than what he writes, think themselves obliged to believe everything he says, because a senator and contemporary(142)." Polybius also accuses him of gross partiality to his own nation, in the account of the Punic war--allowing to the enemy no praise, even where they deserved it, and uncandidly aggravating their faults.(143) In particular, he charges him with falsehood in what he has delivered, with regard to the causes of the second contest with the Carthaginians. Fabius had alleged, that the covetousness of Hannibal, which he inherited from Asdrubal, and his desire of ultimately ruling over his own country, to which he conceived a Roman war to be a necessary step, were the chief causes of renewing hostilities, to which the Carthaginian government was totally averse. Now, Polybius asks him, if this were true, why the Carthaginian Senate did not deliver up their general, as was required, after the capture of Saguntum; and why they supported him, during fourteen years continuance in Italy, with frequent supplies of money, and immense reinforcements(144).