عنوان مقاله [English]
The rational principle "existential gradation" as one of principles of transcendental theosophy attempts to explain the multiplicity in the world under the theory of fundamentality of existence. Although it is supported by rational argument but explaining the multiplicity in the stage of horizontal entities under this principle is not occurred. Or at least there is no clear explanation about horizontal multiplicity under this principle. There is a fact that every explanation that we have been saw in different books, is the explanation of vertical multiplicity. This article want to explain the principles of horizontal and vertical multiplicities in entities and then explain the way in which horizontal gradation can be explained in a manner that there is no factor other than existence. This article just talk about a part of this explanation. There is not any new theory nor a new theory based on Molla-Sadra principles, but just an explanation for one of Molla-Sadra's theories. In a manner that the criterion of differentiation is nothing but existence.