Abstract
This article focusses on the object, material and metaphor of glass and glassmaking in the second part of the Roman de la Rose by Jean de Meun. It argues that in the later Middle Ages the emerging material of glass becomes a means to reflect on epistemic, aesthetic and imaginative processes and their impact on artistic practices. Material knowledge, craftmanship and artistic skills intertwine with discursive knowledge (sciences, rhetoric, philosophy, theology, literature) and reflect a fundamental turn in un-derstanding and shaping the social and epistemic relevance of art (ars).