This planning function unfolds on two levels: firstly as a tool for rationalization of government action and public spending by defining principles, objectives, strategies and instruments of governance in a given period, or else, as a mechanism to foster a new relationship between state and civil society, redefined in terms of democracy, in which dialogue and cooperation become privileged tools in the joint quest for development and collective welfare. In other words, not only interested in obtaining a product, the plan, with the goal also trigger a process, planning to mobilize public opinion and make the whole country in its ethnic diversity, territorial, environmental, gender, organizational and social, without exception, play a more active role in the construction of a new citizen and a welfare society. Urban problems, by the principle of complexity expressed in each of the attributes of the city: the land, housing, transportation, utilities, equipment and public space. The economy is essential to democracy, because freedom is based on the property, understood in its private and public expressions, which are combined in the city. If the Greek polis was born philosophy, democracy and politics, intellectual productions most ancient and present, and if the cops meant the whole community life, political, moral, cultural and even economic, we think that the contemporary city has to mean something more than currently she is: at least some of what was the Athens of Pericles, who in his funeral oration came to show how the polis was primarily a lifestyle. Cities built to human scale spaces in which they could promote mutual understanding, educating the mind and character of the citizens.