Definitions of social capital, advanced by Coleman and Fukuyama, and definitions of lifelong learning and intergenerational learning are discussed and compared, and a synthetic model is presented. This model relies heavily on the practical implementation of strategies for augmenting social capital, such as those applied within the granddad project, an intergenerational learning initiative conducted in schools in the Stockholm County area. It is concluded that intergenerational learning in this theoretical framework provides a foundation for lifelong learning practice in a social capital perspective, even though the definition of social capital used is broad and bears strong resemblance to the Japanese concept of kokoru, advanced by Okamoto (1992).