There has always been a serious ques tion among researchers and politicians on what the progress is and what its components are. Various research works have been carried out for finding logical answers to the above ques tions, each picturing an ideal society and progress in some way. "Clean life" is perhaps the mos t important picture that has been created as inspired by the Holy Quran. This picture, too, is so general that practically leaves no image before the researchers and proponents of progress. This paper intends to find a proper answer to the ques tion of progress in view of Allameh Mohammad Taqi Ja’fari through a descriptive and analytical method. Results of the s tudy indicate that Ja’fari’s "rational life" to the s trength of a theory is the bes t answer to the ques tion of progress, thanks to its intentional and extensional relations with clean life and ideal society. Rational life gives us both logic of social order leading to progress and proper interaction for realizing this goal. Rational life is a theory where religion, philosophy and human experience meet, from among them the role of religion in picturing and realizing the progress is quite outs tanding.
