Abstract

According to the renewal of essences and the trans-substantial motion, the world and its existents are continually in evolution and change and are at no moment in rest and motionlessness. Of course, the former pertains to the domain of disengaged entities and material things and the latter is limited to the world of matter. These two principles enjoy certain differences and similarities in their fundamental bases, arguments, etc. It is because of these very differences that gnostics are not capable of accounting for the unity of things at the level of their origination and corruption in themselves, while the unity of a flowing object, which is mobile due to the trans-substantial, is guaranteed in itself. Both the trans-substantial motion propounded in Mulla Sadra's books and the gnostic principle of the renewal of essences in gnostics' works suffer from certain ambiguities in terms of the limits and dimensions of the problems. Apparently, the issue of the trans-substantial motion is under the influence of the gnostic principle of the renewal of essences. That is why this paper deals with the characteristics of these two issues in terms of their definitions, fundamental bases, arguments, and their most important problems.