Mark Twain Quotes about Laughter
Mark Twain (2016). “Mark Twain in Eruption (Abridged, Annotated)”, p.58, BIG BYTE BOOKS
Mark Twain (1876). “Mississippi Writings”, p.181, Library of America
The human race has one really effective weapon, and that is laughter.
Mark Twain (2015). “Bite-Size Twain: Wit and Wisdom from the Literary Legend”, p.35, St. Martin's Press
Mark Twain (2012). “Mark Twain at Your Fingertips: A Book of Quotations”, p.190, Courier Corporation
"The Mysterious Stranger". Book by Mark Twain, 1916.
Mark Twain (2012). “Mark Twain at Your Fingertips: A Book of Quotations”, p.389, Courier Corporation