The article points out the limits of Austrian economics in so far as the passage from positive to normative economics is concerned. We propose a comparison with neoclassical economics and discuss the different theoretical solutions adopted by these two schools of thought in their legitimization...

The objective is to interpret John von Neumann's growth model as a decisive step of the forthcoming formalist revolution of the 1950s in economics. This model gave rise to an impressive variety of comments about its classical or neoclassical underpinnings. We go beyond this traditional criterion...