This book examines the constructive crossing between philosophy, semiotics, and economics. The complexity of current socioeconomic policy problems demands revision of our conceptual outlooks and recognition of the importance of fresh insights into Keynes and Hayek in the context of capitalism and globalization, contributing to unprecedented social, political, and environmental challenges. Their contributions to economic theory, policy making and philosophical foundations are reconsidered here using the semiotic approach of Charles S. Peirce.The book provides accessible discussions on the role.