Cover of "Budo Hiketsu Aiki no Jutsu" ("Secret Methods of Budo Aiki no Jutsu")Published in Meiji Year 33 (1900)
Aikido is often known as the "Art of Peace" or "The Way of Harmony". Sometimes it is described as "The Way of Harmonizing Ki". "Do" of course, is "The Way", and the word "Ki" is so common these days that it can probably stand just as it is. Then we have "Ai" – which means neither peace nor harmony.