Personally, if I did deny, or did disbelieve, in the existence of God, I would be averse to defining myself *contingent* to the existence of God.
But so am I averse to this, of course. Rather, I define my
religious beliefs with reference to the fact that
I have no belief in God..
If I did deny, or did disbelieve, in the existence of God ... I'd probably go with agnostic.
It would seem strange to
deny the existence of God and then claim to be agnostic rather than atheist.
I do know that many atheists say that God does not exist, but that is different from saying one has no belief in the existence of God.
Maybe that goes back to strong/weak atheism. In fact, I think that some atheists may refer to your last paragraph as agnosticism.
Edit to add...my dictionary says that an atheist is one who denies or disbelieves in the existence of God. So you have two species right there.
Well, there is an epistemological question here as well as a theological one.
I take a strong empirical line on epistemology. For me, the following statements are equivalent:
* I have looked under my bed for evidence of tigers, and I have no evidence that there are tigers under my bed..
* I have looked under my bed for evidence of tigers, and I have evidence that there are no tigers under my bed.
* I do not believe that there are tigers under my bed.
* I believe that there are no tigers under my bed.
* I deny that there are tigers under my bed.
* There are no tigers under my bed.
When I say "equivalent", I mean that each means no more and no less than the other. Although I have arranged them in such an order that they
sound more and more definite, a man who
legtimately and with good cause can make the first claim can make the last, and
vice versa : because, from an empiricist viewpoint, there
can be no stronger statement supporting the last statement than the first.
In particular, the statements you offer seem to present a distinction without a difference. When you write "Many atheists say that God does not exist, but that is different from saying one has no belief in the existence of God" --- then I disagree. If I would say that I have no belief in the existence of tigers under my bed, then I would say that tigers under my bed don't exist, and
vice versa: there are no circumstances under which I would affirm the one but not the other.
In the same way, you make a distinction between those who "deny" and those who "disbelieve" in the existence of God. Well, if I
disbelieve in the tigers under my bed, then, if I am truthful, I will also
deny that there are tigers under my bed, and
vice versa.
As for the word "agnostic", I would reserve the word for those who see arguments on both sides and feel unable to resolve the conundrum. Here's an example :
"
I may say that the impossibility of conceiving that this grand and wondrous universe, with our conscious selves, arose through chance, seems to me the chief argument for the existence of God; but whether this is an argument of real value, I have never been able to decide. I am aware that if we admit a first cause, the mind still craves to know whence it came, and how it arose. Nor can I overlook the difficulty from the immense amount of suffering through the world. I am, also, induced to defer to a certain extent to the judgment of the many able men who have fully believed in God; but here again I see how poor an argument this is. The safest conclusion seems to me that the whole subject is beyond the scope of man's intellect; but man can do his duty."
This is honest agnosticism. By contrast, the man who merely says "I have
no evidence for God, but he
might conceivably exist, therefore I am an agnostic," either has confused ideas about epistemology or is a moral coward.