To consider the brain as only a bunch of neurons can only mean either one of the following: That there's no life after death or the spirit comes to the brain from outside. But since a god in space isn't sending a spirit to the brain from outside, it's evident that 'spirit' is a reality disclosed from one's essence. The metaphor of 'blowing' the spirit alludes to the disclosure of this inner reality, as the act of blowing is from the inside out...