That the mind of Cicero was most amply stored with the learning of the Greek philosophers, and that he had the whole circle of their wisdom at his command, is evident, from the rapidity with which his works were composed—having been all written, except the treatise _De Legibus_, during the period which elapsed from the battle of Pharsalia till his death; and the greater part of them in the course of the year 708. It is justly remarked by Goerenz, in the introduction to his edition of the book _De Finibus_(388), and assented to by Schütz(389), that it seems scarcely possible, that those numerous philosophical works, which are asserted to have been composed by Cicero in the year 708, could have been begun and finished in one year; and that such speed of execution leads us to suppose, that either the materials had been long collected, or that the productions themselves were little more than versions. In his _Academica_, Cicero remarks,—“Ego autem, dum me ambitio, dum honores, dum causæ, dum reipublicæ non solum cura, sed quædam etiam procuratio multis officiis implicatum et constrictum tenebat, hæc inclusa habebam; et, ne obsolescerent, renovabam, quum licebat, legendo. Nunc vero et fortunæ gravissimo percussus vulnere, et administratione reipublicæ liberatus, doloris medicinam a philosophiâ peto, et otii oblectationem hanc, honestissimam judico.” It is not easy to determine, as Schütz remarks, whether, by the expression “hæc inclusa habebam,” Cicero means merely the writings of philosophical authors, or treatises and materials for treatises by himself. “We ought, however,” proceeds Schütz, “the less to wonder that Cicero composed so many works in so short a time, when we read the following passage in a letter to Atticus, written in July 708—‘De linguâ Latinâ securi es animi, dices, qui talia conscribis! ἀπογραφα sunt; minore labore fiunt: verba tantum affero, quibus abundo(390)’; which words, according to Gronovius, imply, that the philosophic writings of Cicero are little more than versions from the Greek.” In the laudable attempt of naturalizing philosophy at Rome, the difficulty which Lucretius had encountered, in embodying in Latin verse the precepts of Epicurus,— “Propter egestatem linguæ rerumque novitatem,”