Attributed to George McDuffle, of South Carolina, during the "Nullification" period. Used by James Hamilton, when Governor of South Carolina. Also quoted by J. C. S. Blackburn, of Kentucky, in Congress, Feb. 1877, during the Hayes-Tilden dispute. Appeared in the Louisville Courier-Journal (Col. Watterson, editor), during same dispute. (See also Romans, XIV. 23).https://en.wikiquote.org/wiki/Doubt