something. In simple word, obstacle could has the dignity of limiting and declining humans. The second one is to thing which decline the perception and introspection of subject in terms of knowledge. According to Motahhari, aside from the realization of putting away obstacles we need to give the spirit of freedom. He analyze the concept of freedom as both right and obligation. He believes that the freedom has necessity for human. Human must be free to choose voluntarily his path. He believes that, contrary to liberalists, inborn right has an ultimate for transcending of human beings. Philosophy of law Like other men of thought, Motahhari thinks that we have to define the concepts first of all. Therefore, he defines right as a dominance or score on something. According to right the human is merit to possess something and other human ought to respect him. Some of rights are such as the right of parents on their children or the rights of husband and wife in relation to each other. Motahhari divided the right into two groups. First group is existential rights or takwini and the second is religious rights or tashriei. former is a real relation between person and object and the latter determined according to former. He knew the right as a potential score for persons. In fact the right concerned with the priority of somebody on something. He concerned with the question in that is the right and possession predicated on human as such or predicated on human in terms of being in society? He believes that undoubtedly the right existed prior to society. Contrary to John Austin (legal philosopher), Motahhari believes that there is a mutual relation between right and responsibility (Haq va Taklif). Motahhari believes that the natural law theory is a rational one that is of importance for human kind. According to him, the foundation of natural theory of law is to world has a goal and aim finally. On the basis of principle of having goal, the God creates the world for the sake of human kind and they have potential right to change the world therefore human kind have right prior to introducing in society. Philosophy of religion Motahhari refers to the concept of 'maktab' or school when he intends to define the word of religion. According to him maktab is a thoughtful disciplined system including ideology and View in terms of ethics,