Martial arts are more than a system of fitness, or even a fighting
system: it must be a vehicle for learning about life.

The founder of Judo, Jigoro Kano defined the two guiding principles of Judo as:

1. Maximum efficient use of power (sometimes defined as maximum effect for minimum effort). 

2. Mutual welfare and benefit for all

He also said there were three levels of Judo applying these principles:

1. Knowelage of attack and defense.

2. Building physical and mental Power.

3. "With great power comes great responsibility." You must use this power for the betterment of society.

 My guiding principles are:

1. Nothing is stronger than gentleness, and nothing is gentler than real strength.

2. We teach the martial arts from the prospective of combat with no rules of engagement.

Nine Attitudes for a Martial Artist by Miyamoto Musashi

1. Think honestly within yourself in your dealings with all men.

2. Constant training is the only Way to learn strategy.

3. Become familiar with every art you come across.

4. Understand the Way of other disciplines.

5. Know the difference between right and wrong in the matters of men.

6. Strive for inner judgement and an understanding of everything.

7. See that which cannot be seen.

8. Overlook nothing, regardless of its insignificance.

9. Do not waste time idling or thinking after you have set your goals.