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In January 1979, the revolution put an end to the Pahlavi dynasty and Nasr, who was visiting London with his family at the time, was unable to return to Iran. He lost everything, including his manuscripts and library. His family settled in Boston. After a few months of teaching at the University of Utah, Nasr was appointed a professor of Islamic studies at Temple University in Philadelphia, which had the largest Ph.D. program in religious studies in the United States.
