Comparison of Derrida and Nasir Khosrow's Concept of the Relation between Speech and Writing

Derrida wants to challenge western’s philosophical basis by deconstruction method, althouth the deconstruction does not mean concrete and not an independent entity. In Derrida's words, it is like a dead virus with the host body that is in motion. He believes foundations of western’s thought is based on double concepts, so that always rely on concept of presence; decent, honest, good, man, speech.... the deep bond with each other, means the central figure of the Logos sweep paradigm. One of this double and powerful concepts is speech /writing that speech, on Derrida‘s viewpoint, dominate writing. Derrida’s works are stage that writing wants to speak. But Nasir Khosrow has seen relation of writing and speech with epistemological perspective. He believes that speech and writing are the successive and necessary of knowledge process. He notes that speech and writing connect together with dialectical way.