• You people with hearts,' he said once, 'have something to guide you, and need never do wrong; but I have no heart, and so I must be very careful.

    L. Frank Baum (2008). “7 Books in 1: L. Frank Baum's "Oz" Series, Volume 1 of 2. the Wonderful Wizard of Oz, the Marvelous Land of Oz, Ozma of Oz, Dorothy”, p.29, Shoes & Ships & Sealing Wax