Aikido and the book A Course In Miracles have some things in common.
Aikido talks about unifying body, mind, and Spirit. A Course In Miracles talks about Spirit being in a state of Grace forever.
A Course In Miracles talks about Heaven, indicating that Heaven is here and now.
The found of Aikido in the book The Art of Peace references establishing Heaven on Earth.
Aikido is an art of Peace. A Course In Miracles is one method of increasing Peace.
Will Heaven be established on Earth? How might it happen?
Aikido is a spiritual martial art and also provides exercise. A Course In Miracles can exercise the mind.
Aikido and A Course In Miracles both preach Peace.