This and the companion volume are about the ascent, vicissitudes and lacunae in the science and art modern economics and about Kenneth Arrow, his architectonic contributions to and impact on the theoretical and applied economics and moral and political philosophy of our age. They provide a comprehensive composite analysis of Arrow's approach and contributions to and his impact on modern economics and philosophy seen from various forms. In addition to original essays that not only analyse Arrow's contributions and impact, but provide insights into what is being done at the frontiers of the subject, these volumes contain interview chapters that afford extraordinary glimpses into the creativity and personality of the major contributors to the economics of our age (including our protagonist) and are an important historical document.