"Our lives are born of the Ki of the universe. Let us give thanks for being born not as plants and animals, but as human beings blessed with a universal mind. Let us pledge to fulfill our missions by helping to guide the development and creation of the universe." (Koichi Tohei, "The Value of Our Existence", 1966
"The very name Aikido indicates its dependence on the laws of nature, which we term ki. Aikido means the way to harmony with ki. That is to say, Aikido is a discipline to make the heart of nature our own heart, to understand love for all things, and to become one with nature. Techniques and physical strength have limits; the great way of the universe stretches to infinity." (Koichi Tohei, "Book of Ki: Co-ordinating Mind and Body in Daily Life", 1976)
"Simply stated, aikido is a budo open to all people who aspire to unify the ki of the universe with the ki of oneself. For all members of the human race, it is the path to attaining harmony with all beings. The gates of aikido are open to people of all ages, classes, sexes, nationalities and races. Non-discrimination and non-exclusiveness are basic characteristics of aikido." (Kisshomaru Ueshiba, "The Spirit of Aikido", 1981)
"The subtle working of ki is the maternal source that affects changes in breath. It is also the source of martial art as love. When one unifies mind and body by virtue of ki and manifests ai-ki (harmony of ki), delicate changes in breath-power occur spontaneously and 'waza' (proper technique) flows freely." (Kisshomaru Ueshiba, "The Spirit of Aikido", 1981)
"Aikido technique is structured on circular movement, for harmony is brought about and all conflict resolved through the spirit of the circle. [...] A circle encloses space, and it is from the perfect freedom of this emptiness that ki is born. From the center of this birthplace the creative processes of life are joined with the infinite, immeasurable universe by the Spirit. The Spirit is the Creator, the eternal parent giving birth to all things. [...] Within the circle the ki of the universe is guided in the processes of creation, evolution, and protection." (Morihei Ueshiba, [attributed in Mitsugi Saotome, "The Principles of Aikido", 1989], 1983)
"Through this principle, the creative process of the spirit is without limit. Within the circle, the ki of the universe is guided in the processes of creation, evolution, and protection. The movement of karma in this world is the circle of balance. The Budo of Aikido is the circle of protection. The circle of the spirit is the source of ki. The spirit of the circle joins spirit, mind, and matter through Aiki and nourishes life. The spirit of the circle contains and creates unlimited technique for it holds all the ki of the universe. This is the circle of the spirit in Aikido. Without it there is no glory, no wisdom, no integrity, no truth, no possibility of uniting spirit and substance. Without it the restorative functions of the body cease to exist. It is the ever-evolving cycle of kokyu." (Morihei Ueshiba, [attributed in Mitsugi Saotome, "The Principles of Aikido", 1989])
"Budo is not about destroying other human beings with one’s strength or weapons, or annihilating the world by force of arms. True budo is channeling the universal energy (ki) to protect world peace, to engender all things fittingly, nurture them and save them from harm." (Morihei Ueshiba, "The Art of Peace", 1991)
"Ki is within us. There is Ki everywhere, either we know how to use it or we don't." (Christian Tissier, [interview] 2008)
"People who really have Ki don't feel it because everything happens naturally within them." (Christian Tissier, [interview] 2008)
"Fill yourself with a flow of energy (ki). Set off your waza with momentum and overwhelm the opponent. There is only a single chance to beat him. Any initiative waza should come from you decisively. Use all your energy when you move offensively and defensively. When not moving offensively or defensively, conserve your energy." (Kazumi Tabata, "Mind Power: Secret Strategies for the Martial Arts", 2010)
