"If you never ask yourself any questions about the meaning of a passage, you cannot expect the book to give you any insight you do not already possess"

This quote means that simply reading a book is insufficient to acquire insight or understanding. One need to actively engage with the product and ask themselves questions in order to get a much deeper understanding. If one does not question the significance of the text, they will not acquire any new insights or understanding from the book. It is the responsibility of the reader to actively engage with the product in order to acquire understanding.