Ralph Keyes calls quotation collectors “quotographers,” the men and women who gather catchwords, watchwords, war words, winged words, maxims, mottos, sayings, and quips into books of a thousand pages. Through the centuries quotation collectors have saved quotations that would otherwise be lost. – Willis Goth Regier, Quotology, 2010

A learned historian declared to me of a contemporary, that the latter had appropriated his researches; he might, indeed, and he had a right to refer to the same originals; but if his predecessor had opened the sources for him, gratitude is not a silent virtue. – Isaac D’Israeli, “Quotation,” A Second Series of Curiosities of Literature

Most of the classical citations you shall hear or read in the current journals or speeches were not drawn from the originals, but from previous quotations in English books… – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876