Miyamoto Musashi is one of the most renowned sword fighters in history, but even a master swordsman can't defend against the spread of misattributed motivational meme's...
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Rabbit Down the Whole is a series exploring the origins of widely shared Inspirational Quotes and other Online sundry.

Twitter: @study_of_swords

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Sources:

Bennett, Alexander. "The Complete Musashi: The Book of Five Rings and Other Works". Tuttle Publishing, Rutland, , 2018.

Cleary, Thomas. "The Book of Five Rings: A Classic Text on the Japanese Way of the Sword." Shambhala, Boston, 2005.

Harris, Victor. "Book of Five Rings", Archive.Org
https://archive.org/stream/MiyamotoMusashi-BookOfFiveRingsgoRinNoSho/Book_of_Five_Rings_djvu.txt
https://www.deviantart.com/alex-faichan/art/Miyamoto-Musashi-442545983 (accessed June 29, 2020)

Hataway, James Earl Jr., “Zen and the Samurai: Rethinking Ties Between Zen and the Warrior.” Master’s Thesis, University of Tennessee, 2006.

Hurst, Cameron. “Samurai on Wallstreet: Miyamoto Musashi and the Search for Success”. USFI Reports, #44, 1982.
https://ejmas.com/jalt/jaltart_Hurst_0101.htm (accessed June 29, 2020)

Kaufman, Stephen. "Musashi's Book of Five Rings: The Definitive Interpertation of Miyomoto Musashi's Classic Book of Strategy".Kindle Edition, 2012.

Tokitsu, Kenji. "Miyamoto Musashi: His Life and Writings". Shambhala, Boston & London, 2004.

Wilson, William S. "The Book of Five Rings." Shambhala, Boston & London, 2002.

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Music:
Today's Special: Jam Tomorrow by Doctor Turtle is licensed under a Attribution License.

Wherever I Lay My Hat, That's My Wife by Doctor Turtle is licensed under a Attribution License.

G of the Bang by Doctor Turtle is licensed under a Attribution License.