No complete work of any of these poets has been preserved to modern times. Our knowledge of the epic, tragic, and satiric poetry of this long period is derived partly from ancient testimony, but chiefly from the examination of numerous fragments. Most of these have been preserved, not by critics on account of their beauty and worth, but by grammarians on account of the obsolete words and forms of speech contained in them,--a fact, which probably leads us to attribute to the earlier literature a more abnormal and ruder style than that which really belonged to it. A few of the longest and most interesting fragments have come down in the works of the admirers of those ancient poets, especially of Cicero and Aulus Gellius. The notion that can be formed of the early Roman literature must thus, of necessity, be incomplete. Yet these fragments are sufficient to produce a consistent impression of certain prevailing characteristics of thought and sentiment. Many of them are valuable from their own intrinsic worth; others again from the grave associations connected with their antiquity, and from the authentic evidence they afford of the moral and intellectual qualities, the prevailing ideas and sympathies of the strongest race of the ancient world, about, or shortly after, the time when they attained the acme of their moral and political greatness. The two earliest authors who fill a period of forty years in the literary history of Rome, extending from the end of the First to the end of the Second Punic War, are Livius Andronicus and Cn. Naevius. Of the first very little is known. The fragments of his works are scanty and unimportant, and have been preserved by grammarians merely as illustrative of old forms of the language. The admirers of Naevius and Ennius, in ancient times, awarded only scanty honours to the older dramatist. Cicero, for instance, says of his plays 'that they are not worth reading a second time[5].' The importance which attaches to Livius consists in his being the accidental medium through which literary art was first introduced to the Romans. He was a Greek, and, as is generally supposed, a native of Tarentum. He educated the sons of his master, M. Livius Salinator, from whom he afterwards received his freedom. The last thirty years of his life were devoted to literature, and chiefly to the reproduction of the Greek drama in a Latin dress. His tragedies appear all to have been founded on Greek subjects; most of them, probably, were translations. Among the titles, we hear of the _Aegisthus_, _Ajax_, _Equus Trojanus_, _Tereus_, _Hermione_, etc.--all of them subjects which continued to be popular with the later tragedians of Rome. No fragment is preserved sufficient to give any idea of his treatment of the subjects, or of his general mode of thought and feeling. Little can be gathered from the scanty remains of his works, except some idea of the harshness and inelegance of his diction.