For I am proverbed with a grandsire phrase… – William Shakespeare, Romeo and Juliet

Gnomic wisdom, however, is notoriously polychrome, and proverbs depend for their truth entirely on the occasion they are applied to. Almost every wise saying has an opposite one, no less wise, to balance it… – George Santayana, “Chapter VIII: Prerational Morality,” The Life of Reason: Volu

My quarrel with him is, that his works contain nothing worth quoting; and a book that furnishes no quotations, is me judice, no book,—it is a plaything. – Thomas Love Peacock, Crotchet Castle, 1831 (The Rev. Dr. Folliott)

The borrowing is often honest enough, and comes of magnanimity and stoutness. A great man quotes bravely and will not draw on his invention when his memory serves him with a word as good. – Ralph Waldo Emerson, “Quotation and Originality,” Letters and Social Aims, 1876