Whatever may have been the origin of the belief in the connexion of Rome with Troy, it certainly prevailed before the poem of Naevius was composed, as at the beginning of the First Punic War the inhabitants of Egesta opened their gates to Rome, in acknowledgment of their common descent from Troy. But the story of the old connexion of Aeneas and Dido, symbolising the former league and the later enmity between Romans and Carthaginians, most probably first assumed shape in the time of the Punic Wars. The belief, as shadowed forth in Naevius, that the triumph of Rome had been decreed from of old by Jupiter, and promised to the mythical ancestress of Aeneas, proves that the Romans were possessed already with the idea of their national destiny. How much of the tale of Aeneas and Dido is due to the imagination of Naevius it is impossible to say; but his treatment of the mythical part of his story,--his introduction of the storm, the complaint of Venus, etc.,--merits the praise of happy and suggestive invention, and of a real adaptation to his main subject. There was more meaning in the mythical foreshadowing of the deadly strife between Romans and Carthaginians, at a time when the two nations were fighting for their very existence, and for the ultimate prize of the empire of the world, than in the age of Virgil, when the power of Carthage was only a memory of the past, and the immediate danger from which Rome had escaped had arisen not so much from any foreign enemy, as from the fierce passions of her own sons. The mythical part of the poem was a prelude to the main subject, the events of the First Punic War. Naevius and Ennius, like others among the Roman poets of a later date, allowed the provinces of poetry and of history to run into one another. They composed poetical chronicles without any attempt to adhere to the principles and practice of the Greek epic. The work of Naevius differed from that of Ennius in this respect, that it treated of one particular portion of Roman history, and did not profess to unfold the whole annals of the State. The slight and scanty fragments that remain from the latter part of the poem, are expressed with all the bareness, and, apparently, with the fidelity of a chronicle. They have the merit of being direct and vigorous, but are entirely without poetic grace and ornament. Rapid and graphic condensation is their chief merit. There is a dash of impetuosity in some of them, suggestive of the bold, impatient, and energetic temperament of the poet; as for instance in the lines Transit Melitam Romanus exercitus, insulam integram Urit, populatur, vastat, rem hostium concinnat[45].