The digital world offers us many advantages, but if we yield to that world too completely we may lose the privacy we need to develop a self. Activities that require time and careful attention, like serious reading, are at risk; we read less and skim more as the Internet occupies more of our lives. And there’s a link between selfhood and reading slowly, rather than scanning for quick information, as the Web encourages us to do. Recent work in sociology and psychology suggests that reading books, a private experience, is an important aspect of coming to know who we are.
The New York Times' David Mikics in praise of (offline) slow reading.
Also see 9 books to help you read more intelligently and write better and Francine Prose on how to read like a writer, then take delight in Maurice Sendak’s little-known and lovely posters celebrating the joy of reading.