Destutt, lecteur de Beauzée (S. Branca) Beauzée, the grammarian who was responsible for the articles on grammar in the Encyclopédie, was one of D. de Tracy's main sources. The author attempts to show the philosophical differences between these two men (sensualism vs. rationalism) are reflected in grammatical analyses. The two themes analysed are the organization of the clause and the scope of the articles in noun phrases.