Ancient Greek tradition of political thinking produced a canon in both senses of the term: the first is a collection of works and ways of approaching to the “political”, deemed as inspiring sources of reference, and the second is pieces of melodies (regarded as themes) which are reproduced and imitated in other parts of the musical compositions (regarded as works of political theory). The canon of political thought, in other words, relied on a series of thinkers and their ideas on the state (back then the city-state, i.e. polis), society, power, history, justice and the forms of government to evaluate and understand political developments and transformations.