In the summer of 1979, at a time when the viability of the Islamic Republic of Iran was being widely questioned in the Western media and the historical background of the revolution that had led to its establishment was largely unknown, Hamid Algar delivered four lectures on the Islamic Revolution at the Muslim Institute in London. In clear and concise fashion, he examined the historical links between Iran and Shi'a Islam; the life an personality of Imam Khomeini, leader of the Islamic Revolution; the career and ideas of Ali Shari'ati, "religious intellectual;" and the course of the events that in little more than a year led to the overthrow of one of the most deeply entrenched dictatorships in the Muslim world. Now reissued in substantially revised form, the text of these lectures remains a useful introduction to the revolution, arguably the most important event in modern Muslim history. New translations made by the author from the writings of Imam Khomeini and Ali Shari'ati enhance the utility of the work.