How we cite our quotes: All quotations are from Star Trek: The Motion Picture.
Quote #10
KIRK: What V'Ger needs in order to evolve is a human quality. Our capacity to leap beyond logic.
DECKER: And joining with its Creator might accomplish that.
In the end, V'Ger can only reach the next stage of its evolution by becoming less mechanical and more human. How's that for irony? Likewise, it's implied that it works the other way around too, with humans needing to gain a technological aspect to reach our next evolution. Fancy-pants call this merging "the singularity."