It produced "Don Quixote" in becoming form as regards paper and type, and embellished with plates which, if not particularly happy as illustrations, were at least well intentioned and well executed, but it also aimed at correctness of text, a matter to which nobody except the editors of the Valencia and Brussels editions had given even a passing thought; and for a first attempt it was fairly successful, for though some of its emendations are inadmissible, a good many of them have been adopted by all subsequent editors.
The zeal of publishers, editors, and annotators brought about a remarkable change of sentiment with regard to "Don Quixote." A vast number of its admirers began to grow ashamed of laughing over it.

It became almost a crime to treat it as a humorous book.

The humour was not entirely denied, but, according to the new view, it was rated as an altogether secondary quality, a mere accessory, nothing more than the stalking-horse under the presentation of which Cervantes shot his philosophy or his satire, or whatever it was he meant to shoot; for on this point opinions varied.

All were agreed, however, that the object he aimed at was not the books of chivalry.

He said emphatically in the preface to the First Part and in the last sentence of the Second, that he had no other object in view than to discredit these books, and this, to advanced criticism, made it clear that his object must have been something else.
One theory was that the book was a kind of allegory, setting forth the eternal struggle between the ideal and the real, between the spirit of poetry and the spirit of prose; and perhaps German philosophy never evolved a more ungainly or unlikely camel out of the depths of its inner consciousness.