The authors recount the important contribution of Professor Sournia as he worked for the French Society of Medicine History for thirty-five years. As a devoted general secretary he managed in 1973 the Society officially recognised as a state-approved institution. Then in 1979 and 1980, he was the President of our Society with authority and awareness of need for some reforms. He was an attentive chief editor of the journal "Histoires des Sciences Médicales" in which many of his original papers demonstrated his wide-ranging education and the diversity of his interests: Arab Medicine and Surgery books, History of Public Health, History of Medical Jargon, the lexicography by Littré, the major epidemics included leprosy, many medical biographies etc. Thus it was not surprising that he has published his "Histoire de la Médecine et des Médecins".