“An advanced state of human society in which a high level of culture, science, industry, and government has been reached” (OED) 

“The city is the cradle and the expression of civilisation” – Paolo Soleri

Cities are what defines “civilisation” so, to re-invent cities is tantamount to re-inventing civilisation itself..!

Civilization is a precarious complex of order and liberty, culture and peace, that is envied by the swarms of barbarians who desire its destruction, either by invasion from without or by multiplying from within.