Trebatius replies: "Cease to write, or if you cannot do that, celebrate the exploits of Caesar." This courtier-like counsel is characteristic of the man, and helps to explain the high position he was enabled to take under the empire. Two other jurists are worthy of mention, _A. Cascellius_, a contemporary of Trebatius, and noted for his sarcastic wit; and _Q. Aelius Tubero_, who wrote also on history and rhetoric, but finally gave himself exclusively to legal studies. Among grammatical critics, the most important is _P. Nigidius Figulus_ (98-46 B.C.). He was, like Varro, conservative in his views, and is considered by Gellius to come next to him in erudition. They appear to have been generally coupled together by later writers, but probably from the similarity of their studies rather than from any equality of talent. Nigidius was a mystic, and devoted much of his time to Pythagorean speculations, and the celebration of various religious mysteries. His _Commentarii_ treated of grammar, orthography, etymology, &c. In the latter he appears to have copied Varro in deriving all Latin words from native roots. Besides grammar, he wrote on sacrificial rites, on theology (_de dis_), and natural science. One or two references are made to him in the curious _Apology_ of Apuleius. In the investigation of the supernatural he was followed by _Caecina_, who wrote on the Etruscan ceremonial, and drew up a theory of portents and prodigies. The younger generation produced few grammarians of merit. We hear of _Ateius Praetextatus_, who was equally well known as a rhetorician. He was born at Athens, set free for his attainments, and called himself _Philologus_ (Suet. De Gram. 10). He seems to have had some influence with the young nobles, with whom a teacher of grammar, who was also a fluent and persuasive speaker, was always welcome. Another instance is found in _Valerius Cato_, who lost his patrimony when quite a youth by the rapacity of Sulla, and was compelled to teach in order to obtain a living. He speedily became popular, and was considered an excellent trainer of poets. He is called-- "Cato Grammaticus, Latina Siren, Qui solus legit et facit poetas." Having acquired a moderate fortune and bought a villa at Tusculum, he sank through mismanagement again into poverty, from which he never emerged, but died in a garret, destitute of the necessaries of life. His fate was the subject of several epigrams, of which one by Bibaculus is preserved in Suetonius (De Cr. ii). The only other name worth notice is that of _Santra_, who is called by Martial _Salebrosus_. He seems to have written chiefly on the history of Roman literature, and, in particular, to have commented on the poems of Naevius. Many obscurer writers are mentioned in Suetonius's treatise, to which, with that on rhetoric by the same author, the reader is here referred. CHAPTER II. ORATORY AND PHILOSOPHY--CICERO (106-43 B.C.).