Philosophy influenced by Aristotle's concept of the Unmoved Mover (6)

I believe the answer is:

theism

(Other definitions for theism that I've seen before include "The doctrine or belief in the existence of a God or gods" , "Belief in a creator" , "Belief in a deity" , "of faith" , "Belief in existence of a God revealed to man" .)

I've seen this clue in The New York Times.

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