U.S. economics professor Clair Brown sets up a Buddhist economics framework that integrates Amartya Sen's capability approach with shared prosperity and sustainability. In her Buddhist economics model, valuation of economic performance is based on how well the economy delivers a high quality of life to everyone while it protects the environment. In addition to domestic output (or consumption), measuring economic performance includes equity, sustainability, and activities that create a meaningful life. A person's well-being depends on cultivation of inner (spiritual) wealth even more than outer (material) wealth.