"Man is by nature a social being, and those who live outside the community must be either a beast or a god": this is Reid Hoffman's guide. Who is this god who will accompany him in building his success? A Guru who will help him to understand the key to opening the doors of the world, including the working world: the need for a network of relationships. Starting from Antiquity and passing through Socialnet, Paypal and Star Wars, we will arrive at the desk of a man who wanted to become a Public Intellectual and instead changed the world of professional relationships.