Sigfrid Aronus Forsius (d. 1624) was the most renowned scholar of the Nordic Renaissance in the Swedish kingdom. The present work is the first comprehensive analysis of his natural-philosophical views and of the sources that he utilised. He was a representative of the exciting spiritual atmosphere of early Reformation. He combined Aristotelian, Paracelsistic, Stoic, Hermetic and Platonic ideas. His basic views included the concept of universal harmony, one aspect of which was the correspondence between the microcosm and the macrocosm, God as the Creating Nature (naturans natura), the...