The study of government and politics is both humanistic and scientific. Aristotle called the study of government and politics the "queen of the sciences". The United States Constitution reveals a joining of political theory with the pragmatic formation of political institutions and practices. Today’s political research involves highly scientific and rigorous attempts to understand human behavior and world events. The study of political science prepares one not only for employment, but for life as an informed citizen ready to participate in political activities within interest groups or political parties; related to community organization and political advocacy; or even service as an elected or appointed official.