Complex sentence: As a student, he reportedly met both Sigmund Freud and Rudolf Steiner; he developed an interst in Anthroposophy, Steiner's version of Theosophy, and helped construct the Goetheanum in 1913--14.
Split into simpler sentences: As a student, he reportedly met both Sigmund Freud and Rudolf Steiner. He developed an interst in Anthroposophy, Steiner's version of Theosophy, and later helped construct the Goetheanum in 1913--14.