Politics moves the world - but how, by whom, and with what effects? This classic introduction provides a concise entry into the field, summarizing the fundamental consensus of important subfields such as political sociology, political systems, political ideas, and international relations. Open questions and scientific controversies are highlighted, which can be explored further through specific literature references. Additionally, the reader engages with the great political thinkers and their contributions to the development of the state and democracy. An overview of selected political systems completes the comprehensive view of this complex science. This useful study companion includes relevant foundational knowledge and also helps to examine current political issues and topics in light of past developments.