"Zid, don't assume people are Theists just because they recognize that Atheism is also a belief. ..."
Essan, you are painting all Atheists with the same broad brush-stroke. You are looking at everything as though it were "black-and-white"...
As to your comment that,
"many of the Scientists who helped to prove "dead wrong" the beliefs you mentioned were Theists. ..."
Many were, back in the times when it would have proven deadly to state that one did NOT believe in the bible 'god'... You know, the one that's only 3,500 years old or so...
What their innermost beliefs were, or would have been, without the shadow of the Church hanging over them, one must leave to conjecture at this time... I would not consider their personal notes as a completely accurate picture of their innermost thought processes, as even notes and diaries could have been used in heretical 'trials', so a cautious person would be careful to avoid totally heretical comments, in general...
However, most of those scientists that you refer to as "theists", accumulated a body of scientific evidence that eventually disproved nearly all of the quasi-"scientific" aspects of the theological dogma of the established system of "FAITH"... Like the "Noaic Flood", the "creation" mythology, the "garden of Eden", "woman created from man's rib", and so on...
On the definition of "atheist" or "atheism", my Webster's New Collegiate Dictionary, copyright 1973, states: "atheist - one who denies the existence of God". Under "atheism", it states: " [MF athéisme, fr athée atheist, Gk atheos godless, fr a- + theos god] 1 a : a disbelief in the existence of deity... b: the doctrine that there is no deity...
In my "Webster's New Universal Unabridged Dictionary", copyright 1996, it states: "atheist - a person who denies or dis-believes the existence of a supreme being or beings..."
So, what part of "a person who... dis-believes the existence of a supreme being or beings... " do you NOT get??? "DIS - belief..." NOT belief...
As has been stated ad infinitum by other posters, to assume AND CONTINUE TO ASSERT that an atheist has a "belief" system is to flatly discount the actual meaning of the word... If you cannot even accept the definitions of atheist as presented by several dictionaries, what point is there in continuing this discussion with you??
Zid