§ 1 — Substance, matter and form — The substance and form terms could recall Louis Hjelmslev’s glossematical theory where the latter’s use of the term ‘content’ could be brought closer to ‘material’ and the use of the word ‘expression’ hjelmsevian to that of Guillaume, but the two authors differ as to the distribution of the roles of these different language elements; for Helmslev, language is a reciprocal involvement — in the sense of the logic of the proposals — of f...