The Iranian revolution was a real revolution, not just a coup d'etat or a putsch or whatever. It was a genuine revolution in the sense that the French and the Russian revolutions were revolutions. It brought a massive change, social, economic, ideological not just a change of regime. Like for the French and Russian revolutions in their day, Khomeini had had a tremendous impact everywhere they had a shared universe of discourse, that is to say, the Muslim world. Just as the French and Russian revolutions in their day, and for some time after, had such an impact, so did the Iranian revolution, and it was not limited to the Shi'a world.

Islam and the West: A Conversation with Bernard Lewis (2006)