The article analyzes the main theoretical components of a well-known conception of G. Guillaume (vision → understanding, potency → realization, singular → general, "grasping" of the singular through the general (saisir = tykhánon of the Stoics), expansion/compression, etc.), deeply investigated by the greatest representatives of ancient and scholastic science. In the works of G. Guillaume the components of the theoretical heritage of the past are represented predominantly in a reduced form. The same incomplete in the context of the numerous studies carried out throughout the XX century looks the Guillaume’s theoretical understanding of the categories of Time and Space.