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

[S]ources are not too reliable. The words and thoughts are the thing. “The best words in the best order” is the object of all quotations. Who made the order and when is of interest, but not vital as the many quotations by “Anon.” testify. – Robert Irvine Fitzhenry (1918–2008), The Harper Book of Quotations

For I often please myself with the fancy, now that I may have saved from oblivion the only striking passage in a whole volume, and now that I may have attracted notice to a writer undeservedly forgotten. – Samuel Taylor Coleridge

Seek not to know who said this or that, but take note of what has been said. – Thomas à Kempis, The Imitation of Christ, translated from Latin