Thomas Babington Macaulay, speech on parliamentary reform (March 2, 1831); in The Complete Writings of Lord Macaulay (1900), vol. 17, p. 18. President Franklin D. Roosevelt paraphrased slightly "The words of the great essayist", not named: "The voice of great events is proclaiming to us. Reform if you would preserve", in his address at the Democratic state convention, Syracuse, New York (September 29, 1936). The Public Papers and Addresses of Franklin D. Roosevelt, 1936 (1938), p. 390.https://en.wikiquote.org/wiki/Reform