" One starts from the experiential assumption
that the mind-body modality changes through the training of the
mind and body by means of cultivation (shugyo) or training (1ceiko).
Only after assuming this experiential ground does one ask what the
mind-body relation is. That is, the mind-body issue is not simply a
theoretical speculation but it is originally a practical, lived experience
(taiken), involving the mustering of one's whole mind and body. The
theoretical is only a reflection on this lived experience. "

― Yasuo Yuasa