Quoted as "a favorite maxim" Thomas Jonathan "Stonewall" Jackson in "Memoirs of Stonewall Jackson by His Widow, Mary Anna Jackson" by Mary Anna Jackson, Prentice Press/Courier Journal, Ch. XIII, (p. 264), 1895.
Stonewall Jackson's comments to his pastor (April 1861) as quoted in Mary Anna Jackson "Memoirs of Stonewall Jackson by His Widow, Mary Anna Jackson" (p. 141), 1895.