"The Theory of probabilities is simply the science of logic quantitatively treated." A quote by American logician Charles Saunders Peirce (1839 - 1914). The quote may be found in Writings of Charles Saunders Peirce, volume 3, 1872-1878 p. 278 as cited in Statistically Speaking: A dictionary of quotations compiled by Carl Gaither and Alma Cavazos-Gaither.