O-Sensei [Morihei Ueshiba] said that Aikido is not about technique, but that it is about how humans should live their lives. Aikido is not really about theory or rationalization. The spirit of Aikido is to create a sphere, a warm sphere, a warm circle of harmonious feelings among people so that people can get along with each other with warm-hearted feeling.
— Guji Munetaka Kuki, Remembering O-Sensei by Susan Perry