"Definition of a Gentleman". Memorandum found in Lee's papers after his death. "Lee the American" by Gamaliel Bradford, p. 233, xroads.virginia.edu. 1912.
Henry Ward Beecher, Augusta Moore (1859). “Notes from Plymouth Pulpit: A Collection of Memorable Passages from the Discourses of Henry Ward Beecher, with a Sketch of Mr. Beecher and the Lecture Room”, p.57