The Tin Woodman knew very well he had no heart, and therefore he took great care never to be cruel or unkind to anything.
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
