An apt quotation is as good as an original remark. – Author Unknown

One would think that a scissors and pastepot collection like this would require little help. Not true. A tribe of hunters and gatherers is required: there is so much to be seen for so little selected. – Robert Irvine Fitzhenry (1918–2008), The Harper Book of Quotations

But I have long thought that if you knew a column of advertisements by heart, you could achieve unexpected felicities with them. You can get a happy quotation anywhere if you have the eye. – Oliver Wendell Holmes, Jr., 1923, quoted in Holmes-Laski Letters: The Correspond

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