Most martial artists also consider a sensei to be a life long guide who provides students with physical, mental, and even sometimes spiritual training. In Japan it is quite appropriate to refer to a church leader or spiritual guide as a sensei. It is also appropriate to use the term for teachers in educational institutions, classical arts and crafts, temples, clubs and many other student - teacher relationships. While a Judo sensei must know the techniques of judo, there is more that can be learned in judo classes besides physical skills. The lessons learned in judo training certainly can be applied to all aspects of life. Over three decades my sensei has shared his wisdom and understanding in many areas. This kind of relationship with a sensei though is quite rare. Students move, Judo clubs close, sensei retires, and it is hard to find an instructor that can provide you with such lessons for a long time.