This article presents a theory on the organization and development of learning systems—the learning network theory. In this theory, learning systems in work organizations are analyzed in a network approach to organizations. Learning systems are subject to tensions, which arise from their dual orientation: an orientation toward the development of human potential (humanity) and an orientation toward the development of the work process (work relevance). Learning network theory offers a frame of reference for analyzing the tensions between humanity and work relevance and provides leads for handling such tensions. The article concludes with a number of suggestions for further research into the organization of learning systems.