Let us enter linguistics by the “gateway of the senses.” The ambiguity of French itself, in which sens signifies both sensation and meaning, leads us to this Janus-portal, a place for elementary exchanges between the self and the world, where Saint Thomas stationed himself to work out a theory of the encounter between the philosophical subject and object or, rather, using his terms, between the cognoscens (active present participle) and cognitum (neuter nominative/accusative of a passive past participle…) The very heart of all diathesis.**