Complex sentence: He studied at, and then guided studies for, the C.G. Jung Institute in Zurich, founded a movement toward archetypal psychology and retired into private practice, writing and traveling to lecture, until his death at his home in Connecticut.
Split into simpler sentences: He studied at, and then guided studies for, the C.G. Jung Institute in Zurich. He founded a movement toward archetypal psychology and retired into private practice, writing and traveling to lecture, until his death at his home in Connecticut.