D.H. Lawrence in his long essay Apocalypse:
Now a book lives as long as it is unfathomed. Once it is fathomed, it dies at once. It is an amazing thing, how utterly different a book will be, if I read it again after five years. Some books gain immensely, they are a new thing. They are so astonishingly different, they make a man question his own identity. Again, other books lose immensely. I read War and Peace once more, and was amazed to find how little it moved me, I was almost aghast to think of the raptures I had once felt, and now felt no more.