Language is a visible organic material. This substance - detached from its emitter- has the particular feature of being transparent and of allowing a passage through. Language as a material unfolds in its own environment and on its own scale, in a back and forth motion between its different states: either as a magma or as hard hollow crystallized shapes. During the process, a prosody emerges from this matter which attempts to manifest, to extract and to define itself. Examining these attempts is the issue.