Why are some nations wealthy and others poor? How did the wealthy nations become rich? What are the components of wealth? How should nations manage their wealth for the future? These are among the most important questions in economics. They are also impossible to answer without defining wealth,...

We develop a model for four sustainability paradigms (weak sustainability, a-growth, de-growth, strong sustainability) within a single framework that accounts for responsibility for nature and future generations and for intra- and inter-generational equality. The model is applied in three case...