illuminationist suhrawardi or sadrian suhrawardi?

suhrawardi’s thoughts and works have had an important impact on formation and developing of mulla sadra’s philosophy, especially theory of “primacy of existence”. although it seems that suhrawadi did not accept this theory, his exact view about it is not known. we can ascribe four features to him: 1. suhrawardi who believes in the primacy of quiddity, 2. suhrawardi who believes in the primacy of existence, 3. suhrawardi who believes in the primacy of light or lights. 4. suhrawardi who decided to constitute a new philosophical school known as the philosophy of illumination that argues about light and problems related to it without clarifying relationship between light and primacy of existence or quiddity. in this article we defend the fourth theory against the three others.