Complex sentence: He studied at the Sorbonne, was a pre-doctoral Fellow of the Rockefeller Foundation and served as professor of Jewish studies at Columbia University and as professor of sociology at Yeshiva University.
Split into simpler sentences: He studied at the Sorbonne, was a pre-doctoral Fellow of the Rockefeller Foundation and served as professor of Jewish studies at Columbia University. As well as professor of sociology at Yeshiva University.