In an earlier paragraph: "If the city is the world which man created, it is the world in which he is henceforth condemned to live" and I interpret that with the text that I highlighted. I come up with an understanding that cities and the constructed environment at big scales coincides with our ability to make and recreate the cities and ourselves. It has to do with personal growth and change which evidently amounts to the growth and change of our cities. Both seemingly connected.