The building of cities is one of man's greatest achievements. The form of his city always has been and always will be a pitiless indicator of the state of his civilization. This form is determined by the multiplicity of decisions made by the people who live in it. In urban circumstances these decisions have interacted to produce a force of such clarity and form that a noble city has been born. If American cities are to change into something worth having, there must be a clear image clearly conceived of what that city should be, and this image must be injected into and mature within the processes which actually dictated the form the city will take. If some real disaster impends in the city, it is not because parking spaces are hard to find, because architecture is bad, because department store sales are declining, or even because taxes are rising.