The essays in this book explore some of the important areas of the long boundary between economics and intellectually adjacent disciplines, by placing the neoclassical paradigm in the broader context of these other social sciences. Written by economists and philosophers, these papers examine the themes that complicate the conventional economist's view of the world and thereby provide a notably more complex (and humane) subject than the traditional homo economicus. In analyzing these "imperialist forays" from the field and "territorial invasions" upon it, the contributors seek to understand what it is that separates economics from the other kinds of inquiry and to expound upon the actual limits of economics. They also look at the shifts and changes in the boundaries of what is considered economics.