This paper is devoted to the proving of three fundamental principles of democracy. The first one notes that the ideal of democracy has some kind of uncertainty. The second one remarks that the concept of “civil society” is unsuitable for solving analytical and practical problems. Finally, the third one points out that the key for understanding the correlation between democratic ideal & democratic reality is the question about human rights & social justice. Because of these principles, modern political science has some new questions, such as “Who is nation?” & “Is it possible for democracy to have more than one nation?”. During this research we have shown some approaches for solving these questions.