From impromptu movie nights in a Seattle alley to the adapted reuse of Diocletian’s Palace in Split, Croatia, Wolfe searches for the “first principles” of what makes humans feel happy and safe amid the hustle and bustle of urban life. He highlights the common elements of cities around the world that spontaneously bring people together: being inherently walkable, factors that contribute to safety at night, the importance of intersections and corners, and more. In this age of skyrocketing metropolitan growth, he argues, looking to the past might be our best approach to creating the urban future we dream about.