 Iamblichus’ work exerted a very profound influence on the subsequent course of Neoplatonic philosophy. In particular, he stands out as an important theologian owing to the shift he brought about with respect to Plotinianism. With Iamblichus, Plotinus’ economical approach to metaphysical principles was developed into full-fledged metaphysical laws: in this respect, Iamblichus emerges as a remote forerunner of Medieval scholasticism. He himself vindicated a “scientific theology” (Reply to Porphyry I, 4 [SS-2013: 10.18]) and established a canon of texts that gave it the justification of tradition. 