Papersock
Lucid Dreamer
Once again lilithu, once again you hit the nail square on its head. I feel that the basis for disbelief lies in a persons inability/unwillingness to accept that there is any being in existance that is better than him, that any intelligence is higher, or that in fact there is anything greater than him. Whatever cannot be fully understood or conceived is automatically suspect. If a human cannot achieve it, it cannot be achieved. If we cannot create it, it cannot be created. If it overrides our logic, it simply cannot be.
I don't think every atheist is consciously thinking that, but I do feel the idea itself stems from exactly that type of thought. That type of thinking I feel derives directly from arrogance. This is coming from a human being who admittedly does not know all things. Who admits that its knowledge is severely limited, and perception is also limited. This human being has not even gained a complete knowledge of those things that can clearly be seen and studied, but presumes to have a complete knowledge of that which cannot be seen or studied. This same human is admittedly faulty and mistake prone, known to have been in egregious error before. This same human presumes that any who can or are willing to accept that there may be something greater than the self, is in delusion.
Here you are doing the same thing as Bertrand Russell in the OP, assuming that atheists do not believe in a higher power because of their arrogance.