Originally published in 1968, these ten essays by one of Europe's leading sociological theorists deal with important issues on the borderline between sociology and social philosophy and demonstrate the author's deep insight into history and political analysis. The author maintains that the structures of power in which the political process takes place not only originate change and give it direction, but also produce the fertile conflicts that give expression to the fundamental uncertainty of human existence. Through an examination of various concepts inherent in this dynamic process - power, resistance, conflict, change, freedom, uncertainty - a coherent theory of society emerges.