No time spent with a book is ever entirely wasted, even if...

No time spent with a book is ever entirely wasted, even if the experience is not a happy one: there’s always something to be learned. It’s just that, every now and again, you hit a patch of reading that makes you feel as if you’re pootling about… But what can you do about it? We don’t choose to waste our reading time; it just happens. The books let us down.