Three small films for as many reflections on the senses and knowledge of man. In the first episode, Emmer reviews the precepts of ancient philosophy, from Greek to Roman civilization, with an anthological and didactic intent; in the second, working as at the beginning of his career on a vast repertoire of pictorial and non-pictorial images, he analyzes the "history of the gaze" in the visual arts, from prehistoric graffiti to medieval altarpieces, from impressionist and cubist paintings to modern day advertising posters; in the third, finally, telling with irony and lightness a day of solitude in his mountain home, he reflects on the intellectual thought of writers and great thinkers, relating to his own individual experience both the words of oral tradition and popular culture as well as the writings of geniuses like Shakespeare, Spinoza or Gogol.