Next to the originator of a good sentence is the first quoter of it. Many will read the book before one thinks of quoting a passage. As soon as he has done this, that line will be quoted east and west. – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876

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

Apothegms to thinking minds are the seeds from which spring vast fields of new thought, that may be further cultivated, beautified, and enlarged. – Ramsay, as quoted in A Dictionary of Thoughts: A Cyclopedia of Laconic Quotation