Public administration involves managing public programs and organizations at all levels of government. It aims to uphold democratic values like individualism, equality, and liberty. There are three approaches to studying public administration: managerial, which focuses on efficiency; political, which emphasizes responsiveness; and legal, which relates to enforcing laws. Public administration differs from business administration in that objectives are often ambiguous, decisions require input from diverse groups, managers have greater visibility, and the goal is pursuing public rather than private purposes. Key themes in the field include balancing politics and administration, reconciling bureaucracy with democracy, and maximizing both efficiency and responsiveness. Successful public managers need conceptual, technical, and human skills.