One must be courteous both in class and in their personal life. Courtesy is an action symbolizing respect. The person without courtesy has no respect for others and without respect for others, there is no respect for oneself. With no self respect, true achievement in life is impossible. The practice of courtesy leads to respect and is therefore highly valued.
Integrity is honesty. A person must have honesty to others and oneself in order to achieve anything worthwhile in their life. A facet of integrity is loyalty to oneself, family, principles, friends, associates and their country.
Perfection of self is a universal value and in Taekwondo, we must persevere through physical, mental and spiritual trials to attain our personal improvement.
Controlled power is useful, power out of control is destructive. One must control and direct energies to some benefit or face the consequences of the destruction caused by the lack of control.
This is the moral strength to do what is necessary and right regardless of consequence. Persons with this spirit have changed the world.