Xenophon is the last of the trio of the Greek historians, whose writings are classical and inimitable. [Footnote: Born probably about 444 B.C.] He is characterized by great simplicity and absence of affectation. His "Anabasis," in which he describes the expedition of the younger Cyrus and the retreat of the ten thousand Greeks, is his most famous book. But his "Cyropaedia," in which the history of Cyrus is the subject, although still used as a classic in colleges for the beauty of the style, has no value as a history, since the author merely adopted the current stories of his hero without sufficient investigation. Xenophon wrote a variety of treatises and dialogues, but his "Memorabilia" of Socrates is the most valuable. All antiquity and all modern writers unite in giving to Xenophon great merit as a writer, and great moral elevation as a man. If we pass from the Greek to the Latin historians,--to those who were as famous as the Greek, and whose merit has scarcely been transcended in our modern times, if, indeed, it has been equaled,--the great names of Sallust, of Caesar, of Livy, of Tacitus, rise up before us, together with a host of other names we have not room or disposition to present, since we only aim to show that the ancients were at least our equals in this great department of prose composition. The first great masters of the Greek language in prose were the historians, so far as their writings have descended, although it is probable that the orators may have shaped the language before them, and given it flexibility and refinement. The first great prose writers of Rome were the orators. Nor was the Latin language fully developed and polished until Cicero appeared. But we do not write a history of the language: we speak only of those who wrote immortal works in the various departments of learning. As Herodotus did not arise until the Greek language had been already formed by the poets, so no great prose writer appeared among the Romans for a considerable time after Plautus, Terence, Ennius, and Lucretius flourished. [Sidenote: Sallust.]