The Impact of the Theory of Trans-Substantial Motion on Mulla Sadra s Kalami Thought

One of the most important ontological innovations of Mulla Sadra which exercised a huge influence over his philosophical and kalami thoughts was the theory of the trans-substantial motion. His magnificent discovery in this field demonstrated restlessness in the substance of the world and human beings and proved the existence of continuous motion and change in the essence of all material existents. This was a view which the majority of pre-Sadrian philosophers considered to be irrational and impossible. The extent of the influence of this theory is so vast that, even after some centuries of research, there is still some room for further study regarding its various dimensions. However, what has been discussed and written concerning the outcomes of the trans-substantial motion so far are generally limited to ontological and philosophical results, and little research has been carried out regarding the effects and uses of this theory in the kalami-religious field. Accordingly, following an analytic and qualitative method, after posing the problem meticulously and explaining this theory, the writers have examined the data related to the influence of this theory on Mulla Sadra’s kalami thoughts while emphasizing the innovative nature of the theory of the trans-substantial motion. Hence, the findings of this research are based on inference and focus on explaining the most important kalami and religious concomitants of the trans-substantial motion. These findings include the knowledge of God, description of the eternal dependence of created beings on God, demonstration of the temporal origination of the world, intellectual explanation of corporeal resurrection, philosophical justification of the doctrine of the embodiments of deeds, falsity of the notion of transmigration, innovative explanation of the nature of death, and clarifying the universality of revivification.