This is how i view the whole thing. This is kind of off topic a bit, but in semi-response to the OP, here's my two cents.
I believe in GOd, the christian god, and that is my belief. Real, nothing you can say will sway me because i believe that to be truth. You may believe something different, get in an argument of semantics and such, but this is still what i believe. This is partially who i am and partially just because of what i believe.
I also If someone wants to hear what i think about god, i tell them. If that makes them believe what i believe, then i believe that to be what god has chosen, therefore i do not argue with people much when they try to argue with me.
Here are my facts that i use when people try to argue with me, and i think they work well.
1. You cannot prove or disprove god. If you want to call me an idiot because i believe in him then, then so be it, i still believe what i believe.
2. Arguing semantics doesn't accomplish anything. Arguing the validity in a belief in god ultimately comes back to 1, that you cannot prove or disprove god.
3. Pulling quotes from anybody doesnt solve anything either. No matter how smart, intuitive, or knowledgeable the quoted is, they are still a human, and thus can have false ideas and beliefs. The ancient greek scientists thought that leeches got bad blood out of people,a nd they were completely wrong, even though the may have been thought of as geniuses in their time.
"A lack of evidence does not disprove something; it takes evidence to disprove something." - Why is your assumption "There is a God and this must be disproved.", rather than, the natural state of, "There is no God, and this must be disproved." You're defeating all of your own arguments.
I use the following supporting evidence that scientific methodology is the only guaranteed way to prove some statement true or false: All things that have been found empirically true, are true, and no things that have been found empirically true, are false. All things that have been found true non-empirically, have later found empirical support, or empirical defeat. By your own admission, you cannot non-empirically disprove something, therefore, the scientific method is the only method that works, QED.
The truth is, this is not how it works. If you have ever extensively studied the scientific method, then you would know. IF you say something is true and then find an exception, then you can call it false. This exception, is the evidence that it takes to disprove something. The scientific method almost never "proves" anything, it just disproves different things. The truth is, his argument is not "There is a god, and this must be disproved", his saying is "God has not truly had enough evidence to be disproven, although throught the scientific method you can also not prove him real."
Much of this entire topic is subject to interpretation. I think the best argument that can be given to the original topic is one single thing.
1. God cannot, in any way, be proven, or disproven. All attempts to prove this are human theories. All things we can try to argue are moot. This is a truth, proved empirically, as no evidence can be found for him, and no evidence can be found against it.
If you really want me to show you how to prove it empirically, it is actually very simple.
Hypothesis: god does not exist.
Null hypothesis: god exists.
Experiment: attempt to prove god exists.
Conclusion: since no evidence can be given that supports that god exists, in no experiment in any way, we cannot reject the null hypothesis that god exists. Therefore, we cannot say that god exists.
Now this too:
Hypothesis: god exists.
Alternative hypothesis: god does not exist.
Experiment: Try to prove god does not exist.
Conclusion: Since we can see no evidence that god does not exist, as the only way to prove the fact that god does not exist false, would be to see god, we cannot reject the null hypothesis that god does not exist. Therefore we cannot say that he does not exist.
None.