All types of knowledge ultimately lead to self-knowledge....

All types of knowledge ultimately lead to self-knowledge. So, therefore, these people are asking me to teach them, not so much how to defend themselves or how to do somebody in. Rather, they want to learn to express themselves through some movement, be it anger, be it determination or whatever. So, in other words, they're paying me to show them, in combative form, the art of expressing the human body.