Complex sentence: In 1959, he received his PhD from the University of Zurich, as well as his analyst's diploma from the C.G. Jung Institute and was then appointed as Director of Studies at the institute, a position he held until 1969.
Split into simpler sentences: In 1959, he received his Ph.D. from the University of Zurich, as well as his analyst's diploma from the Jung Institute. He was immediately appointed to the Director of Studies at the Jung Institute, a position he held until 1969.