Allowing yourself to stop reading a book - at page 25, 50, or even, less frequently, a few chapters from the end - is a rite of passage in a reader's life, the literary equivalent of a bar mitzvah or a communion, the moment at which you look at yourself and announce: Today I am an adult. I can make my own decisions.

Reading's ability to beam you up to a different world is a good part of the reason why people like me do it in the first place---because dollar for dollar, hour per hour, it's the most expedient way to get from our proscribed little "here" to an imagined, intriguing there". Part time machine, part Concorde, part ejector seat, books are our salvation.