There are groups of thinkers in Qajar period which some of them do not let the Islamic culture to face with the new cultural aspects and vigilant for immunizing it as its former identity. While other group, who are interested in the splendor aspects and accomplishments of modernity, believe that native culture had no potentiality for understanding these new-fashioned ideas. This article is going to explain, with a view to the principles of ontology, that facing with the cultural accomplishment of modernity not only needs sufficient knowledge to its legal and theoretical principles but also demands especial obligation and liability towards ones cultural tradition and antecedent in order to pave the way for constructing an unfeigned and applicable combination with the requirement of philosophy and presence of these two.