Complex sentence: Along with his second wife, psychologist Maria Hippius, Dürckheim founded the Center for Existential Psychology Training and Conference in the early 1950s, located in the Black Forest village of Todtmoos-Rutte.
Split into simpler sentences: Along with his second wife, psychologist Maria Hippius, Dürckheim founded the "Center of existential and psychological formation and encounter" in the early 1950s. It was located in the Black Forest village of Todtmoos-Rutte.