This success induced Erasmus to enlarge and complete his labours. The Adagiorum Chiliades, the title of the work in its new form, was part of the work of his residence in Italy in the years 1506-9, and was published at Venice by Aldus in September, 1508. The enlarged collection, to all intents and purposes a new work, consists of no less than three thousand two hundred and sixty heads. In a preface, Erasmus speaks slightingly of the Adagiorum Collectanea, with that affectation from which few authors are free, as a little collection carelessly made. "Some people got hold of it," he adds, (and here the affectation becomes absolute untruth,) "and had it printed very incorrectly." In the new work, however, much of the old disappears, much more is partially or wholly recast; and such of the old matter as is retained is dispersed at random among the new. In the Collectanea the commentaries had all been brief: here many are expanded into substantial treatises covering four or five pages of closely printed folio.
The Aldine edition had been reprinted at Basel by Froben in 1513. Shortly afterwards Erasmus himself took up his permanent residence there. Under his immediate supervision there presently appeared what was to all intents and purposes the definitive edition of 1515. It is a book of nearly seven hundred folio pages, and contains, besides the introductory matter, three thousand four hundred and eleven headings. In his preface Erasmus gives some details with regard to its composition. Of the original Paris work he now says, no doubt with truth, that it was undertaken by him hastily and without enough method. When preparing the Venice edition he had better realized the magnitude of the enterprise, and was better fitted for it by reading and learning, more especially by the mass of Greek manuscripts, and of newly printed Greek first editions, to which he had access at Venice and in other parts of Italy. In England also, owing very largely to the kindness of Archbishop Warham, more leisure and an ampler library had been available.
Among several important additions made in the edition of 1515, this essay, the text of which is the proverbial phrase "Dulce bellum inexpertis," is at once the longest and the most remarkable. The adage itself, with a few lines of commentary, had indeed been in the original collection; but the treatise, in itself a substantial work, now appeared for the first time. It occupied a conspicuous place as the first heading in the fourth Chiliad of the complete work; and it was at once singled out from the rest as of special note and profound import. Froben was soon called upon for a separate edition. This appeared in April, 1517, in a quarto of twenty pages. This little book, the Bellum Erasmi as it was called for the sake of brevity, ran like wildfire from reader to reader. Half the scholarly presses of Europe were soon employed in reprinting it. Within ten years it had been reissued at Louvain, twice at Strasburg, twice at Mayence, at Leipsic, twice at Paris, twice at Cologne, at Antwerp, and at Venice. German translations of it were published at Basel and at Strasburg in 1519 and 1520. It soon made its way to England, and the translation here utilized was issued by Berthelet, the king's printer, in the winter of 1533-4.