William H. Seward's argument as defense attorney during the trial of an African-American criminal defendant, Auburn, New York (July 1846) as quoted in "Works of William H. Seward", Volume I (p. 417), 1853.
William H. Seward's retort to Stephen A. Douglas on the Senate floor after the Illinois senator used an offensive slur in a speech, as quoted in Doris Kearns Goodwin "Team of Rivals" (p. 163), October 25, 2005.