His uncouth appearance had made Cyrano insecure about his looks, and he uses violence to overcome that insecurity. In Act I, Cyrano had accused The Mendler for looking at his nose, when in fact The Mendler was minding his own business. Instead, Cyrano started to yelled at him and eventually he had punched the Mendler. This short scene, indicates that Cyrano puts plenty of attentions to his nose, even though people are not aware of that “flaw”. Human beings put so much attention to that specific that they don 't like, and tends to cause problems among themselves and others around them.