Master swordsman Miyamoto Musashi's life exemplifies bushido. Musashi (1584-1645) wrote the The Book of Five Rings (Gorin no Sho) around 1643. It consists of five volumes (Earth, Water, Fire, Wind and Void). The Book of Earth describes the general framework of bushidō. For example: apply skills in any situation, always carry two swords, learn how to effectively use the lance, naginata, bow and arrow, and guns. A daimyo should know the strength of his troops and how to properly deploy them. Devote yourself to training to master a way, avoid evil acts and thoughts, broaden perspectives with arts and knowledge about different professions, make objective judgments etc.