doctorate in mystical theology at Sophia University
Biog. resource center (Contemp. authors). Aug. 16, 2004 (William Johnston; b. July 30, 1925, Belfast, Northern Ireland; Roman Catholic priest of the Society of Jesus; Sophia University, Tokyo, Japan, professor of religious studies, 1974-; S.T.D., 1968, Sophia University)
His The mysticism of the Cloud of unknowing, 1967.