Introduction -- Planning at the crossroads -- Understanding urbanism -- Learning from science and nature -- This book -- Cities, planning and modernism -- City planning -- Modernist city planning -- Post-modern urbanism -- Conclusions -- Articulating urban order -- Urban units -- Urban syntax -- The nature of urban order -- Conclusions -- The social logic of urban order -- Buildings -- Cities -- The streets -- Conclusions -- The kind of thing a city is -- Metaphors and models -- Emerging perspectives -- The city as ecosystem -- Conclusions -- Emergence and evolution -- Emergence -- Evolution -- Conclusions -- Emergent urban order -- Urban emergence -- Street patterns -- City forms -- Conclusions -- Cities in evolution -- The evolution of cities -- Modernism in evolution -- 21st century evolving urbanism -- Planning, design and evolution -- Creation, development or evolution -- Space, time and civics -- An evolutionist approach -- Conclusions -- Understanding cities and urbanism -- Implications for practice and research -- Reflections on evolution -- Beyond cities, design and evolution.