The course consists of two parts. The first part gives the tools of language and methodology for the study of politics. Topics covered will include: theories of knowledge and the construction of scientific theories; the different functions of language; the different ways of understanding the differences between political philosophy and political philosophy, political theory and ideology. The second part presents a reflection on the keywords of the vocabulary philosophical and political (state, politics, power, authority, violence, consensus, political, interest, nation, freedom, justice). Particular emphasis will be given to the analysis of the concept and theories on democracy by referring: the greek model, the model of Rousseau, to liberal democracy, pluralist democracy and democracy in the age of globalization and multiculturalism. The course ends with a reflection on the current problems of democracy and its possible transformations.