The letter prepared by the student (Hussein Jabbar Mechal) addressed the religious and non-religious subject in philosophical thought in general and Greek in particular, which is an important topic at the level of human thinking in various historical times. This topic has received great attention from most intellectuals, researchers and philosophers, and it is rare to find any of them who did not know the importance of this subject, on which most of the customs and traditions of societies and nations were founded for religious and non-religious concepts, which play a major role in building and sustaining the system of moral values in these societies. How philosophers deal with him throughout the ages, not to overlook the historical dimension of the development of philosophical ideas in both religious and non-religious aspects, which necessitated a reference to the historical approach with the use of the method of analysis and conclusion.