It is remarkable that nearly all the early poets lived to a great age, and maintained their intellectual vigour unabated to their latest years; while of their successors none reached the natural term of human life, and some among them, like many great modern poets, were cut off prematurely before their promise was fulfilled. The finer sensibility and more passionate agitation of the poetic temperament appear, in some cases, to exhaust prematurely the springs of life; while, in natures more happily balanced, or formed by more favourable circumstances, the gifts of genius are accompanied by stronger powers of life, and thus maintain the freshness of youth unimpaired till the last. The length of time during which Naevius, Plautus, Ennius, Pacuvius, Accius, and probably Lucilius, exercised their art suggests the inference, either that they were men of firmer fibre than their successors, or that they were braced to a more enduring strength by the action of their age. As the work of men writing in the fulness of their years, the serious poetry of the time appealed to the mature sympathies of manhood; and even the comic poetry of Plautus deals with the follies of youth in a genial spirit of indulgence, tempered by the sense of their absurdity, such as might naturally be entertained by one who had outlived them. But perhaps the most important condition determining the original scope of Roman poetry was the predominance in that era of public over personal interests. Like Virgil and Horace, most of the early poets were men born in comparatively a humble station; yet by their force of intellect and character they became the familiar friends of the foremost men in the State. But while the poets of the Augustan age owed the charm of their existence to the patronage of the great, the earlier poets depended for their success mainly on popular favour. The intimacy subsisting between the leaders of action and of literature during the second century B.C. arose from the mutual attraction of greatness in different spheres. The chief men in the Republic obtained their position by their services to the State, and thus the personal attachment subsisting between them and men of letters was a bond connecting the latter with the public interest. The early poetry of the Republic is not the expression of an educated minority keeping aloof from public life. If it is animated by a strong aristocratic spirit, the reason is that the aristocratic spirit was predominant in the public life of Rome during that century.