But in the dying world I come from quotation is a national vice. No one would think of making an after-dinner speech without the help of poetry. It used to be the classics, now it’s lyric verse. – Evelyn Waugh, The Loved One: An Anglo-American Tragedy, 1948

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

I am reminded of the professor who, in his declining hours, was asked by his devoted pupils for his final counsel. He replied, Verify your quotations. – Sir Winston Churchill