A quote is just a tattoo on the tongue. – Attributed to William F. DeVault

Dr. Richard Bentley (1662-1742)… is said one day, on finding his son reading a novel, to have remarked—’Why read a book that you cannot quote?’— a saying which affords an amusing illustration of the nature and object of his literary studies. – Cyclopædia of English Literature edited by Robert Chambers, 1844

Most anthologists of quotations are like those who eat cherries or oysters; first picking the best ones and winding up by eating everything. – Sebastian Roch Nicolas Chamfort

Immortality. I notice that as soon as writers broach this question they begin to quote. I hate quotation. Tell me what you know. – Ralph Waldo Emerson, Journals, May 1849