By "without proof" do you mean that you don't have 100% evidence or by without proof you mean that you are believing this even though you don't have evidence for the claim? If the first, there's no problem as long as your probability estimate for some form of deity isn't 0. If the second then whether or not you are an atheist there's a serious gap in your rationality.
Incidentally, it might help in this discussion to taboo the word the atheist.
I would prefer to taboo the word 'evidence'.
If you want to taboo 'atheist', please provide your translation of what Dragonlord said to begin this discussion.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.