Latin history during this period made considerable progress. It was a common practice among statesmen to write memoirs of their own life and times; among others of less note, Sulla the dictator left at his death twenty-two books of _Commentarii Rerum Gestarum_, which were afterwards published by his secretary. In regular history the most important name is that of Quintus Claudius Quadrigarius. His work differed from those of the earlier annalists in passing over the legendary period, and beginning with the earliest authentic documents; in research and critical judgment it reached a point only excelled by Sallust. His style was formed on that of older annalists, and is therefore somewhat archaic for the period, Considerable fragments, including the well-known description of the single combat in 361 B.C. between Titus Manlius Torquatus and the Gallic chief, survive in quotations by Aulus Gellius and the archaists of the later Empire. More voluminous but less valuable than the _Annals_ of Claudius were those of his contemporary, Valerius Antias, which formed the main groundwork for the earlier books of Livy, and were largely used by him even for later periods, when more trustworthy authorities were available. Other historians of this period, Sisenna and Macer, soon fell into neglect--the former as too archaic, the latter as too diffuse and rhetorical, for literary permanence. Somewhat apart from the historical writers stand the antiquarians, who wrote during this period in large numbers, and whose treatises filled the library from which, in the age of Cicero, Varro compiled his monumental works. As numerous probably were the writers of the school of Cato, on husbandry, domestic economy, and other practical subjects, and the grammarians and philologists, whose works formed two other large sections in Varro's library. On all sides prose was full of life and growth; the complete literary perfection of the age of Cicero, Caesar, and Sallust might already be foreseen as within the grasp of the near future.