Abstract
The recent focus on sustainability as guiding principle for economic activity has generated many (often conflicting) definitions of sustainable economic development. Yet while the terminology may be new, the discussion is not. It parallels the discussion about biases of economic valuation concepts that have led to the neglect of the domestic and subsistence contributions relegated to the "informal" or household sector. This paper argues that the narrow definition of economic theory, methodology, and valuation concepts has led to the detrimental neglect of sustaining functions without which economic activity is impaired. To move toward sustainability it is imperative to regain a broader understanding of economics. Three principles are identified as essential for this conceptual expansion of economics. They are: concreteness rather than abstraction, connectedness rather than isolation, and diversity rather than homogeneity. All three are informed by feminist theory. Thus it is argued that the voices of women who have gone largely unheard in economics are essential to reconceptualizing economics as sustainable.