"But there is something about life that all of us, in the back of our minds, know is true: The best and most unforgettable moments have a way of blindsiding us, of appearing as if by magic when we aren't even looking for them. So it is with books. They're out there, on library shelves in the town where you are reading these words. Some haven't had their covers opened in years, or been carried out the front door of the library. Maybe you and one of them were meant for each other. It's summer. What have you got to lose?"And this is why I read so much. :) Simple serendipity.
(The rest of the article is linked below)
http://www.cnn.com/2011/OPINION/08/21/greene.books/index.html?hpt=hp_c2