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[F]limsy, desultory readers, who fly from foolish book to foolish book, and get good of none, and mischief of all—are not these as foolish, unhealthy eaters, who mistake their superficial false desire after spiceries and confectioneries for their real appetite, of which even they are not destitute, though it lies far deeper, far quieter, after solid nutritive food?
— THOMAS CARLYLE