2Co 4:3-4 esv And even if our gospel is veiled, it is veiled only to those who are perishing. (4) In their case the god of this world has blinded the minds of the unbelievers, to keep them from seeing the light of the gospel of the glory of Christ, who is the image of God."
Until God supernatural removes these blinders, everyone is an unbeliever...
btw, naturalism is itself an unproven assumed a priori one adopts as a worldview for reasons for reasons that themselves are not provable from within the naturalistic worldview.... unless the naturalist is aware of an empirical experiment whereby one can prove this worldview is the only method for determining truth...? eg they can't, because choosing naturalism is itself based on metaphysical (unproven and unprovable from within naturalism) presuppositions such as a closed universe, the impossibility of miracles, adopting empiricism as the only standard for true etc... which, in the case of the latter, this worldview violates it's own criteria for truth as the worldview itself (naturalism), as previously noted, is not itself, empirically verifiable. How can one prove, empirically, that miracles are impossible? What kind of experiment could one conduct to prove that no God exists? They can assume these things, and since the god of this world has blinded their eyes, they will, but they do so for metaphysical reasons, not because belief in God is itself disproven scientifically. This is why so many respected highly intelligent scientists are themselves, Christians, eg John Polkinghorne and see
http://en.wikipedia.org/wiki/List_of_Ch ... in_science for others...
Belief in God cannot be determined as being true or false based on only whether one is an academic, a scientist, a gifted intellectual etc. Rather it is a question of whether or not God decides to sovereignly life the blinders on the heart and mind which keep a person in darkness by monergistically regenerating their heart enabling them to savingly believe. Until God does this, a person will remain an atheist of one sort or another, be they of the dogmatic and closed/narrow minded type, or tending towards the agnostic type.
blessings,
ken