Mind over muscle Jigoro Kano,
this beautiful little hard back is easy to read and beautiful to hold, it is my go to reference point for Philosophy and understanding of judo , in the text book it mentions the three principles of judo, defence, cultivation and Mind & body, showing that like may martial arts it is more than just training on the tatami it is a lifestyle choice & study, this is a refreshing book for those who are interested in the deeper understanding of judo.