Adversus indoctum et libros multos ementem

Truly, what you are now doing is the reverse ot what you are aiming to do. You expect to get a reputation for learning by zealously buying up the finest books, but the thing goes by opposites and in a way becomes proof of your ignorance. Indeed, you do not buy the finest; you rely upon men who bestow their praise hit-and-miss, you are a godsend to the people that tell such lies about books, and a treasure-trove ready to hand to those who traffic in them. Why, how can you tell what books are old and highly valuable, and what are worthless and simply in wretched repair— unless you judge them by the extent to which they are eaten into and cut up, calling the book-worms into counsel to settle the question? As to their correctness and freedom from mistakes, what judgement have you, and what is it worth?

Yet suppose I grant you that you have selected the very éditions de luxe that were prepared by Callinus or by the famous Atticus with the utmost care. What good, you strange person, will it do you to own them, when you do not understand their beauty and will never make use of it one whit more than a blind man would enjoy beauty in favourites? To be sure you look at your books with your eyes open and quite as much as you like, and you read some of them aloud with great fluency, keeping your eyes in advance of your lips; but I do not consider that enough, unless you know the merits and defects of each passage in their contents, unless you understand what every sentence means, how to construe the words, what expressions have been accurately turned by the writer in accordance with the canon of good use, and what are false, illegitimate, and counterfeit.