In Zen in the Art of Archery, the author writes,
"The archer ceases to be conscious of himself as the one who is engaged in hitting the bull's-eye which confronts him. This state of unconscious is realized only when, completely empty and rid of the self, he becomes one with the perfecting of his technical skill, though there is in it something of a quite different order which cannot be attained by any progressive study of the art "
Is it possible that the emptying of the mind in Jordan's "Oneness" (particularly as seen in the archery scenes) comes from this source?