NORMATIVE AND POSITIVE KNOWLEDGE IN POLITICAL ECONOMY: NEW ANSWERS TO OLD QUESTIONS?

1. Reason as the Source of Knowledge For medieval men, the existence of a personal and acting God was beyond any doubt. They were convinced that God intervenes into and interferes with the course of the world. The acting of God was a main factor for the explanation of natural phenomena. But with the passing of time, the understanding of nature improved and more and more phenomena could be explained by appeal to reason only and without recourse to actions of God. It became the general opinion that natural phenomena are subject to invariable natural laws. This clear departure from the God‐related understanding of nature happened when modern philosophy emerged in the 17th and 18th century. This modern philosophy saw nature as a mechanic construction. One of the leading philosophers of that period, Rene Descartes, argued that the laws of mechanics are the laws of nature. Descartes, the founder of rationalistic philosophy, was no atheist, but when he referred to God, it was only to become sure that what is clear (and rational) is also true.