The Secrets of Jujitsu : A Complete Course in Self Defense

Jujitsu as a means of self-defense will teach you to take care of yourself in dangerous situations whether armed or unarmed.

It is a valuable study as it trains you to evade the impact of an opponent's strength and attack him at a point where he can bring only 20 per cent of his strength to bear. It teaches you to unbalance your opponent.