Erasmus was now reader in Greek and professor of divinity at Cambridge; but Cambridge was far away from the centre of European thought and of literary activities. He left England before the end of the year for Basel, where the greater part of his life thenceforth was passed. Froben had made Basel the chief literary centre of production for the whole of Europe. Through Froben's printing-presses Erasmus could reach a wider audience than was allowed him at any court, however favourable to pure religion and the new learning. It was at this juncture that he made an eloquent and far-reaching appeal, on a matter which lay very near his heart, to the conscience of Christendom. The Adagia, that vast work which was, at least to his own generation, Erasmus's foremost title to fame, has long ago passed into the rank of those monuments of literature "dont la reputation s'affermira toujours parcequ'on ne les lit guere." So far as Erasmus is more than a name for most modern readers, it is on slighter and more popular works that any direct knowledge of him is grounded on the Colloquies, which only ceased to be a schoolbook within living memory, on the Praise of Folly, and on selections from the enormous masses of his letters. An Oxford scholar of the last generation, whose profound knowledge of humanistic literature was accompanied by a gift of terse and pointed expression, describes the Adagia in a single sentence, as "a manual of the wit and wisdom of the ancient world for the use of the modern, enlivened by commentary in Erasmus's finest vein." In its first form, the Adagiorum Collectanea, it was published by him at Paris in 1500, just after his return from England. In the author's epistle dedicatory to Mountjoy he ascribes to him and to Richard Charnock, the prior of Saint Mary's College in Oxford, the inspiration of the work. It consists of a series of between eight and nine hundred comments in brief essays, each suggested by some terse or proverbial phrase from an ancient Latin author. The work gave full scope for the display, not only of the immense treasures of his learning, but of those other qualities, the combination of which raised their author far above all other contemporary writers, his keen wit, his copiousness and facility, his complete control of Latin as a living language. It met with an enthusiastic reception, and placed him at once at the head of European men of letters. Edition after edition poured from the press. It was ten times reissued at Paris within a generation. Eleven editions were published at Strasburg between 1509 and 1521. Within the same years it was reprinted at Erfurt, The Hague, Cologne, Mayence, Leyden, and elsewhere. The Rhine valley was the great nursery of letters north of the Alps, and along the Rhine from source to sea the book spread and was multiplied.