Fr. Klaus Riesenhuber S.J. 
Fr. Klaus Riesenhuber is a German citizen, and a member of the Japan Province of the Society of Jesus. He joined the Society of Jesus in 1958, and was ordained a priest in 1971. He is currently a Professor in the department of Philosophy at Sophia University in Tokyo. Among his major works are Hören auf den Anruf - zur transzentental konstitutiven Funktion des Wortes (1984), and Theology and the Question of God in Heidegger (1990). Father Riesenhuber is a regular practitioner of Zen Buddhism, and he frequently conducts sessions in Zen meditation both for Japanese and foreigners at the SJ House, which is the Jesuit residence of Sophia University.
His address is: SJ House, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8571, Japan.
He may be contacted by telephone and fax at the following numbers:
Tel: 03-3238-5111; Fax: 03-3238-5056