The mind will quote whether the tongue does or not. – Attributed to Emerson in Edge-Tools of Speech by Maturin M. Ballou, 1886

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

There is a homely directness about these rustic apothegms which makes them far more palatable than the strained and sophisticated epigrams of the characters of Oscar Wilde’s plays, who are ever striving strenuously to dazzle us with verbal pyrotechnics. – Brander Matthews, “American Aphorisms,” Harper’s Magazine, November 1915,

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