Analysis of the problem of the relationship between the changing entity and the constant entity and another solution in this regard

One of the basic discussions in philosophy is the explanation of the changes that are evident in different parts of this world. We can talk about these changes in different ways; However, one of the basic discussions in this field is the explanation of the relationship between the two changing and constant parts. Throughout history, Islamic philosophers have given answers to the mentioned question. The question of this article is that in addition to the disputed solutions in this regard, what stronger solution can be presented in this field? In response to this question, this article firstly, with the descriptive-analytical method, categorized and analyzed the opinions raised in this field, and finally, presented a new opinion based on the final perception of substantial movement. According to this finding, in the final analysis, the essential movement is the existential intensity, and the moving being, in this existential flourishing, is continuously added to its existential capacity, and nothing of its identity and constituents is lost. What is lost in this path is its existential deficiency and limitation. Now, it can be said that the constant cause gives rise to an existence in which evolution and flourishing are hidden in its content, and in the light of this evolution, its existential perfection is not lost, and as a result, the effect does not violate the cause.