In these experience above we can know that attack and defence are not different from each other, and thus, you should have your opponent in conflict against the world and you harmonize yourself in it, where you will find sameness of attacks and defences of right Taekwondo.

When you hit your opponent you should break his will with yours, oppress his tide down with your tide, scatter his vigor with your Ki-Hap and hit his trunk off with your weapon. When you block your opponent's attack, you should empty yourself to lead his intention in vain, carry your tide on his and scatter his sharpness rather absorbing yourself in it to make your attack. Why are they not same?

If your hands and feet(your weapon) were hard and quick you can easily injure the opponent's body as you want, if your vigor were sharp with your excellence in controling your bloody spirit you can easily fell him down even without outer hurts, and if your tide were firm with deliberate thought you would be easily able to surpass even with no fight. Also can you endure the opponent's attack if you have strong body, you can turn the opponent's attack to your own if you fill yourself firmly, and your opponent cannot find his target to attack if you empty yourself fully. What is an attack and what is a defence among them?

If you absorb yourself in the opponent's attack when he attacks you, and if you thus succeed in having him in conflict against the world it would be a good defence as well as a good attack. The result will make him collapse becaus of his own attack and he will strike himself against the earth to lose his power. This can be a good attack of yours as well. Therefore, it is a thought of the world that distinguish an attack from a defence, which depends only upon the ideas, while it is the knowledge of Taekwondo that harmonizes an attack with a defence into sameness, which depends rather upon actions.

How can you follow these teachings?

Seek some empty points in the oponent's motion. Then, go into it. Since every motion is continuous change of emptyness and fullness this results Heo-Sil and you are sure to find an empty points in his motion. You should hit the <Heo> of his in it. At this time you should harmonize two kinds of distance between you and him; One is the distance of your attack that you penetrate the center of your opponent, and the other is that of your defence that you don't draw back from him but move aside suddenly to an unexpected spot.

The distance of penetrating the opponent tells you that you should dash on his center, as soon as you see a good chance, breaking through his defence on the tide of a beast's trampling fragile grasses with the sense of piercing him to behind away. The critical point of this distance is the tide of billows that overwhelms rocks.

The distance of moving aside tells you that you should not block directly the fierce attack with its tide but rather move aside suddenly to stab his mind with vanity. It is important in this skill that you should not get far away from your opponent but find out a chance in which you keep a proper distance to him. The critical point of this distance is the contemplation of not drawing back.

The secret to get this skill in the whole process is to have your breath even and control it. Breath is long joint of the change extended form the ceiling to the bottom of phenomena of life, and an axis that binds mind and body to oneness. When you control this breath you can control the mind and then motion, and when you grow the body which mediates mind and motion you can make a motion that accords with the mind and a body that is proper for the motion.

In this manner you move your breath with serene mind and make the balanced and harmonized vigor out from your whole body to reconcile it with the movements of bones and muscles, controling your opponent and defending his attack, since the biological breathing is extended consistently from each cell to the whole mass. Therefore, the breath can finally be the resource of powers to attack the opponent and to protect yourself.

The key point of controling breath, in attacks or in defences, is same and simple, no matter whether before or after getting skilled. It is to breathe in when you block your opponent's attack and to breathe out when you hit him, with no unnecessary breathing. To breathe in does not mean merely to inhale air in your lung but to empty your whole to receive the opponent's fierceness while to breathe out does not mean just to exhale air from your body but to fill your whole to explode the inner energy to him. Do both at once.