Change
Cities bring change – for society and for individuals – and the status quo is no friend of those without food or health care or a future. The part of the world that is rural and poor moves glacially – only occasionally shocked by famine or civil war or, very rarely, something as helpful as the Green Revolution – while the part of the world that is urban and poor is changing rapidly. There is opportunity in change.
Edward Glaeser, 2011.
Alog 
Change is good for those who have everything to gain, but it is not good for those who have everything to loose.