The mind, if slackened even a little, will cause defeat, the same as fearing the opponent will make you unable to use full strength.
Kyuzo MifuneTrue spirit of Judo is nothing but the gentle and diligent free spirit. Judo rests on flexible action of mind and body. The word flexible however never means weakness but something more like adaptability and openmindedness. Gentleness always overcomes strength.
Kyuzo MifuneDo not place hope in finding a secret technique. Polish the mind through ceaseless training; that is the key to effective techniques.
Kyuzo MifuneA good Judoka never anticipates his action in a match, but his mind is as clever as a polished mirror which enables him to foresee precisely anything to happen and he displays freedom of his physique to cope with any change. Such mental state and physical action are called sei or tranquility and do or action, sometimes they are called ju and go or tenderness and sturdiness, in and yo or negative and positive, etc.
Kyuzo Mifune