Ali Shariati Mazinani ( Persian : علی شریعتی مزینانی , 23 November 1933 – 18 June 1977) was an Iranian revolutionary and sociologist who specialised in the sociology of religion . He is regarded as one of the most influential Iranian intellectuals of the 20th century. He has been referred to as the "ideologue of the Islamic Revolution ", although his ideas did not ultimately serve as the foundation for the Islamic Republic.