Mark Twain Quotes about Positivity
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Mark Twain (2014). “Mark Twain on Common Sense: Timeless Advice and Words of Wisdom from America's Most-Revered Humorist”, p.48, Skyhorse Publishing, Inc.
Optimist: Person who travels on nothing from nowhere to happiness.
Mark Twain (2012). “Mark Twain at Your Fingertips: A Book of Quotations”, p.340, Courier Corporation