At the end of the twentieth century, the concept of knowledge advanced to become one of the central factors of society and seemed to gain in importance in the twenty-first century, mostly understood as know-how and technical knowledge. Next to globalisation, knowledge seems to be the leading term both in public, as well as in scientific, discourses. What is more, the prominent status of knowledge is also reflected in the fact that it is used particularly in social sciences to explain complex social transitions and changes. Thus, one of the most widely discussed and debated social diagnoses takes place under the term Knowledge Society. However, the academic discipline of adult education has not yet profoundly engaged in the discourse on Knowledge Society. This book brings together a cross-section of European researchers in adult education who have contributed to the discourse on Knowledge Society from various perspectives. By presenting their recent research results, the book provides an overview of key concepts within the European discourse which, according to observations, is only at the beginning.