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Medium of Motion (Dharmastikāya) --
This inanimate matter that fills the universal space supports motion of the souls as well as the tangible matter, which are also in states of constant flux. As anything transits through it, the arrangement of the medium in which it does so also undergoes a change. Thus every change in the modes of the souls and the tangible matter is also accompanied by a corresponding change in the mode of the medium ether. However, in spite of this change of modes, the basic matter ether remains constant. Change of modes is a result of destruction of one mode and the creation of the other and both these happen to the matter that is constant in the two situations.
Medium of Position (Adharmāstikāya) —
Having understood the change and constancy of the medium of transition, it would not be difficult to understand the changes that take place in the modes of the medium of position as anything or being changes its position in it.
Space (Ākāśāstikāya) –
The function of space is to accommodate all other universal substances. As anything or being undergoes any change (which they do all the time), their spatial form also undergoes a change and hence the spatial arrangement of the space in which they accommodate themselves also changes. This is the change of mode for the space. However, the space-matter remains constant and unchanged.
Time (Kāla) -
We have dealt with the changes in time and the changes wrought by it in other things and beings in the last chapter and it needs no further elaboration here.
BHAVA (MOODS AND MODES): 243
