The Ido philosophy is a proposal to clarify the meaning of today’s warrior pathway. The author tries to answer the following questions: In what way should we understand epistemology? How do we describe the human being and the phenomenon of martial arts? What is the meaning of the terms ‘idō’ and ‘Idōkan’? What ethics, values and rules are prominent in the Ido? What is the specific, symbolic content of the Ido? This is a single case study, involving a content analysis of literature and the wider discourse, and the hermeneutic phenomenology. Epistemology is understood here as a way of understanding the martial arts by the practitioner, and as a way of reaching the truth about the philosophy of martial arts. In both cases it is the practice th...