My parents valued books, but they grew up in the Depression, aware of the quicksilver nature of money, and they learned the hard way that you shouldn’t buy what you could borrow. Because of that frugality, or perhaps independent of it, they also believed that you read a book for the experience of reading it. You didn’t read it in order to have an object that had to be housed and looked after forever, a memento of the purpose for which it was obtained. The reading of the book was a journey. There was no need for souvenirs.