The Book of Five Rings
(gorin no sho)
Miyamoto Musashi is the writer of the book of five rings (gorin no sho). The entire book was written in a cove, where the Japanese samurai lived isolate hisself completely from world, until the complete drawing up of the book.
When he finished the work he spent his time painting, and expressing so his life since he had lost most of his strenght due to his old age.