This paper approaches some essential concepts representing the foundation of a modern society, of a rule-of-law state. All the political parties publicly active made it their goal and objective the obtaining of governance. In order to implement their governing policies, they must use the mechanisms that are specific to a rule-of-law state. To govern is not easy; to govern well represents not only a legal obligation, but also a moral one. The people must be “served”, its interest is primordial, and the governing must achieve the public purpose.