(The following is an argument I've been putting together for the existence of the human spirit, directed at materialists/atheists. It is an argument from individual consciousness. It kinda fits in with my personal apologetic.) Imagine you are an X-Man like Charles Xavier, but with much more extreme capabilities. You also have a Cerebro-like machine that allows you to see every human being in the world and know everything there is to know about them. With your superhuman powers, you look at Cerebro's screen and see billions of human beings at once in infinite detail. You know each person's exact physical makeup. You can see their every neuron firing. And you fully comprehend what you see. You also know virtually every human being on the screen is self-aware. Each has an independent conscious that allows them to experience the world around them from their own unique perspective. Virtually every one of those billions of bodies is not yours, but you could in theory experience reality through any one of them, because they are all capable of consciousness – because they are conscious. However, one of those bodies is yours, and you experience the world through it for the lifetime of that body. What is it about your particular body that allows you to perceive reality through it and no other? You see that the neural activity in your brain is different from, say, Body A. It is also different from Body B, and different from all other the bodies. But the same thing can be said of Body A: It is also different from Body B, Body C, and all other bodies. Every body has this thing in common: they all have neural activity that is different from each other, yet not in any fundamentally unique way. This is to be expected, as each brain is thinking different things and working in different ways. But what a brain is thinking or doing has nothing to do with which body you are self-aware through or which body your neighbor is self-aware through. Neural activity differences can explain various mental processes going on in different brains, but they don't explain why your self-awareness is tied to your particular body. If you could somehow force Body B's neural connections and activity to exactly match yours, you wouldn't suddenly start perceiving reality through both bodies! Your self-awareness remains bound to your body for as long as your body lives. It does not change, even though the material that makes up your body changes over time. Most of the atoms and molecules that make up your body as a newborn child are gone when you reach old age. Your neural connections also change as you learn and age – your brain processes information differently over time. The firing of your neurons also constantly varies. You are different than you were as a child, or even a day ago. But your awareness stays the same. It doesn't occasionally leave your body and maybe move to someone else's. If you believe the physical universe is all there is, can you give any scientific reason for why you are aware through your particular body, other than pulling groundless theories out of the air? How can you prove that your particular consciousness is a product of neural activity, and not (at least to some degree) the other way around. I'm not talking about mentally processing information such as doing a math problem in your head, remembering something from the past, telling a story, and so on. A brain can theoretically do these things without requiring self-awareness – just like a computer. But self-awareness goes beyond this. How do you explain your personal self-awareness, as distinct from others' self-awareness, purely as the result of physical processes? I'm not asking for proof. There are many things that we can't prove because of the limitations of time, money, energy, etc. But if the only things that are true are things that can be proven scientifically, then there must be a scientific way to prove your self-awareness is purely a physical phenomenon. I do not think self-awareness is a purely physical phenomenon. I believe it is due to the interaction of body and spirit. Without a spirit, you would be no more self-aware through your body than you are self-aware through anyone else's body. The reason we are self-aware is a very important thing to find out, because if consciousness requires more than what is physical, the whole foundation of Godless scientific materialism falls apart.