It takes great heart to be a warrior, it takes great soul to be a warrior, and it takes great spirit too.
Ghenghis Khan was a great warrior. I do not think that many people would talk about his great heart and soul. There is an unfortunate tendency to romanticize the idea of a warrior. This same tendency to distort is also seen in "translating" O'Sensei's words to fit within some kind of romanticized, "new age" framework. Graham likes to talk at length about what O'Sensei said and meant, without being about to cite the actual Japanese and the translations that he is relying on. He might not consider such facts to be important, but many of us do. If you want to express some idiosyncratic meanings of terms and interpretations of what other people said, then you should note it as such, rather than trying to "prove" the "correctness" of those positions in the face of overwhelming evidence to the contrary.