"The more one knows, the luckier he is, for knowledge is the greatest gift in life."

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Source : 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.678, Shoes & Ships & Sealing Wax

L. Frank Baum