Initially, a lecture for students this essay by Max Weber (1864-1920), the founder of political sociology, turned out to be a classic of political sciences. Until today it is a set book for students. The German academic explores the field of professional politicians - who make their living 'off' or 'for' politics. He explains what it needs to be a leader. This book is a must read - not only for politicians and students, but every citizen with responsibility towards his state.