When John Oliver a few days ago called Trump a “sociopath narcissist”, he was doing what he is best at: irreverent and frank journalism. But the statement might be more than a TV catchphrase. Whispers about a questionable state of mind of the Presidential candidate are getting more and more insistent. In his latest public appearances, he seemed unable to control his temper in front of criticisms and to form full sentences. He alternated unempathetic behaviors with the exaltation of his own grandiosity.