Quoted in Alexander Macfarlane, Ten British Mathematicians of the Nineteenth Century (1916). "Pure mathematics; may it never be of use to any man!" is cited as the toast of the Mathematical Society of England in Science, 10 Dec. 1886.
Peter Marshall (1949). “Prayers Offered by the Chaplain, the Rev. Peter Marshall, D.D.: At the Opening of the Daily Sessions of the Senate of the United States During the Eightieth and Eighty-first Congress 1947-1949”