Derrida contrasts the masculine stele in Glas, the site of Hegel and philosophy, with the feminine stele of Genet, flowers, rhetoric, literature, and laughter. He takes the Nietzschean premise that concepts have their origins in metaphors and deconstructs the relationship between philosophy and rhetoric. Derrida is critiquing the philosophical claim that names relate directly to objects without intermediary meanings. He shows that philosophy has no more claim to knowledge than rhetoric or literature.
Philosophical metaphors are just as overdetermined as literary ones.
Their boundaries are no more secure.