Daidōji Yūzan was a samurai and military strategist of Edo period Japan. He was born in Fushimi in Yamashiro Province. Among the works he wrote in his late years was the widely circulated Budō Shoshin-shū (武道初心集), an introduction to warrior ethics that was influential among middle- and lower-class samurai. It has been translated into English by Arthur Lindsay Sadler as The Code of the Samurai, William Scott Wilson as Budoshoshinshu: The Warrior's Primer and by Thomas Cleary.
