W. Somerset Maugham said this quote

“ I don't see the use of reading the same thing over and over again,' said Phillip. 'That's only a laborious form of idleness.'But are you under the impression that you have so great a mind that you can understand the most profound writer at a first reading?'I don't want to understand him, I'm not a critic. I'm not interested in him for his sake but for mine.'Why do you read then?'Partly for pleasure, because it's a habit and I'm just as uncomfortable if I don't read as if I don't smoke, and partly to know myself. When I read a book I seem to read it with my eyes only, but now and then I come across a passage, perhaps only a phrase, which has a meaning for me, and it becomes part of me; I've got out of the book all that's any use to me and I can't get anythning more if I read it a dozen times. ... ”