The current crises in the financialization of capitalism, and their repercussions on the financial viability of entire countries, severely question the achievements of mainstream economics and its disregard of Keynes’s theory of effective demand and finance. In view of this, Peter Flaschel and Sigrid Luchtenberg consider roads to a type of capitalism that could eventually be considered as ‘social’ in nature. The authors underpin their study with theory, empirical evidence, and policy from a positive as well as a normative perspective. As points of departure for their concept of social capitalism, the theoretical framework provides a synthesis of the work of Marx, Keynes, and Schumpeter on ruthless capitalism, regulated capitalism, and competitive socialism.