Altern must be learned, says the Tübingen philosopher Otfried Höffe. In this guide to aging, he comprehensively addresses the economic, medical, legal, and social aspects of the topic and specifically questions the prerequisites for aging happily and with dignity. The book is directly aimed at those affected, offering practical advice such as the "four L's" - Walking, Learning, Loving, Laughing - and also discusses the topics of dying and death.