He repeated to himself an old French proverb that he had made up that morning. – F. Scott Fitzgerald

The quotation-business is booming. No subdivision of the culture seems too narrow to have a quotation book of its own…. It would be an understatement to say that these books lean on one another. To compare them is to stroll through a glorious jungle of incestuous mutual plagiarism. – James Gleick, 1993

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

The multiplicity of facts and writings is become so great that every thing must soon be reduced to extracts and dictionaries. – Voltaire