This chapter examines that the extent to which individuals are embedded in a meaningful social network has enriching consequences both for their life in general and for their chances of  aging well. The chapter is divided into the following sections: First,  the chapter explores why meaningful relationships have a positive effect on personal well-being and quality of life. Second, we describe the changed social environment of late modern society and the possibilities for social integration under these new social conditions. Third, the personal networks of Dutch older adults are described, the  changes that are occurring in these networks, the role of major life events and the importance of social competencies when dealing with such events. Fourth, we show what makes older adults sufficient defensible to participate in meaningful personal networks. Finally, a concluding section draws together a number of remarks about aging well in contemporary society.