‘The changes in the age structure of the population have preoccupied science, politics and civil society for many years. Approaches to record the associated concomitant phenomena in a comprehensive and internationally comparable scientific framework and to prepare the results for ageing and social policy measures have so far remained largely inconsequential. However, in order to plan and implement an efficient and successful ageing and social policy, a sound empirical basis is required. Creating such a foundation is the aim of the researchers who have come together for this book. Their contributions take into account the diverse geographical, historical, cultural, structural and social conditions that are significant for a good life in old age. On behalf of AGE Platform Europe, with over 100 member organisations and a strong voice of older people in Europe, I expressly welcome this initiative and wish the book and its contents a wide distribution and application.’