Summary
This quote suggests that the true value of books is measured by the knowledge and understanding gained from reading them, rather than the financial profit they generate for the publishing industry. It implies that the most influential and impactful books are often those that may not have been commercially successful or received widespread recognition, but have contributed significantly to the readers' intellectual growth and development. Thus, the quote emphasizes the importance of learning and personal growth in the context of reading, rather than purely focusing on the monetary aspects of book publishing.