The very cheapness of literature is making even wise people forget that if a book is worth reading, it is worth buying. No book is worth anything which is not worth much; nor is it serviceable, until it has been read, and re-read, and loved, and loved again; and marked, so that you can refer to the passages you want in it.
The Works of John Ruskin, Honorary Student of Christ Church, Oxford: Sesame and lilies. Rev. and enl. ed., 1871 (ed. 1871)