Ma`rif Aqli

The purpose of this research is a comparative study of the philosophy of perfection and happiness from the perspectives of Ayatollah Mohammad Taqi Mesbah Yazdi and Jean-Paul Sartre. One of the most fundamental expectations from philosophical schools is to determine human perfection and the peak of happiness in human life and to introduce a path to achieve it. From this perspective, focusing on the views of Ayatollah Mesbah Yazdi in Islamic philosophy and Sartre's existentialism, the researcher has examined the divine-centered school of Islam and the human-centered philosophy of existentialism. The perspectives mentioned in this research have been adapted with a fundamental and qualitative approach, analytically, and using library resources, in order to compare and find out what each of these ideas has to say about the possibility of achieving perfection and happiness, to what extent they have responded to this basic human need, and to what extent they are benefit as a guide on this path. Considering the anthropological and ontological foundations of both perspectives, the findings of this research are evidence of the ineffectiveness of Sartre's existentialism for human perfection and happiness. This ineffectiveness due to the creation of despair. Because Sartre’s existentialism leaves man with a heavy burden of global responsibility by emphasizing the impossibility of perfection and the absence of external standards and guides.