Émile Durkheim, who considered suicide relating to social factors like religious relations, family concept, political and national affections, emphasized that we can put that action in the right context only if we examine it within its milieu, in other words, within its time and culture. Just as the attributes referring to suicide and the connotations given to euthanasia, sanctions and applications in that area are varying throughout the history according to the conditions of the milieu in which they are produced and to the systems of belief and thought. The concept of “suicide as a psychological/mental disorder”, appeared during the birth of modern medicine, caused people to forget the other connotations of suicide and transformed itself into an opinion which is still valid today. As for the question of euthanasia has been pushed away to an illegitimate field of debate. This article firstly aims to recall the variety of these definitions, to determine their relations to social, cultural and historical context in which they are produced, and secondly, to debate the power served by the prohibitions about this subject in the past and today considering their reasons. Consequently, this article also tries to read “the mortal history” of religion, philosophy and modern medicine concerning us in this context of debate