The misuse of books is the death of sound learning. People think they know what they have read, and take no pains to learn. Too much reading only produces a pretentious ignoramus.
 Jean-Jacques Rousseau, Emile, or On Education (1762). copy citation

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Author Jean-Jacques Rousseau
Source Emile, or On Education
Topic death pain
Date 1762
Language English
Reference
Note Translated by Barbara Foxley
Weblink http://www.gutenberg.org/cache/epub/5427/pg5427-images.html

Context

“OF TRAVEL Is it good for young people to travel? The question is often asked and as often hotly disputed. If it were stated otherwise—Are men the better for having travelled?—perhaps there would be less difference of opinion.
The misuse of books is the death of sound learning. People think they know what they have read, and take no pains to learn. Too much reading only produces a pretentious ignoramus. There was never so much reading in any age as the present, and never was there less learning; in no country of Europe are so many histories and books of travel printed as in France, and nowhere is there less knowledge of the mind and manners of other nations.” source