Stefan Sachs studied physics and works as manager in sales, service
and personnel matters. He is also in demand as management consul-
tant and coach. In social and religious projects he supports inter-
cultural and interreligious communication and understanding.

He is doing Zazen since 1978 and was confirmed to be a Zen teacher
of the Sanbô Kyôdan in August 2008. He received the Zen name
Kôun-Ken (light clound). His first teacher was Kôun-An D'Ortschy Roshi.
Since her passing away he is the student of Sr. Kathleen Sei'un-An
Roshi and Yamada Ryôun-Ken Roshi