This is a unique account of the role played by 58 figures and diagrams commonly used in economic theory. These cover a large part of mainstream economic analysis, both microeconomics and macroeconomics and also general equilibrium theory.

This paper surveys some of the major writings of Harry Johnson on trade theory and attempts at least a partial assessment of his contribution to the field. The coverage is not exhaustive but is instead illustrative of Johnson's view on (i) the emptiness of qualitative economics, (ii) the...

This paper discusses the origin of the Phillips curve and its place in macro models; its theoretical underpinnings; the logic of the natural rate hypothesis; and the view that macro models can be closed by the expectations-augmented Phillips curve.

The Phelps-Friedman theory that the long-run Phillips curve is perfectly inelastic at the natural rate of unemployment has been criticized by Tobin (1972) and others. This paper accepts tentatively the Phelps-Friedman hypothesis and enquires into what follows from it. We do this because the...

Any set of commodities closely related in consumption and/or in production may be regarded as differentiated products. Close relation in consumption depends on consumers' tastes. Elementary scientific methodology tells that theories aspiring to empirical relevance must be consistent with the...