A single gnomic line can come to resonate with centuries of subsequent wisdom. – Gary Saul Morson, The Words of Others: From Quotations to Culture, 2011

I believe it was Gayelord Hauser, the nutritionist, who said that “you are what you eat,” but if you happen to be an intellectual, you are what you quote. – Joseph Epstein, “Quotatious,” A Line Out for a Walk: Familiar Essays, 1991

That part of a work of one author found in another is not of itself piracy, or sufficient to support an action; a man may adopt part of the work of another; he may so make use of another’s labors for the promotion of science and the benefit of the public. – Lord Ellenborough, quoted in Bouvier’s Law Dictionary by John Bouvier, 8th

It is a good thing for an uneducated man to read books of quotations. Bartlett’s Familiar Quotations is an admirable work, and I studied it intently. The quotations when engraved upon the memory give you good thoughts. They also make you anxious to read the authors and look for more. – Winston Churchill, Roving Commission: My Early Life, 1930