It sounds sounds like a Zen koan to say it takes effort to be an atheist.
Perhaps ...
What I mean is, if one is going to declare their atheism as reasonable and rational, then they should be able to reasonably and rationally argue it, based on sound principles, and not on
a priori erroneous assertions about the nature of God, or what theists believe.
Take Ehrman, as discussed elsewhere. I admire his NT scholarship. I can follow his arguments. I just don't accept his conclusions as convincing. There's too much assumption, and sometimes he makes too much of too little. So if that was his argument for atheism, then I find his arguments too weak and subjective.
Even Ehrman himself acknowledges that his scholarship is not sufficient reason to not believe in God, but many assume it is the reason why he is an atheist, 'and therefore it's good enough for me', kind of thing.
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We see a debate here, arguing atheism on the grounds of the lack of empirical evidence. This ignores the fact that by definition God transcends the empirical, and yet the empiricist insists that the God they refute must be an object available for empirical evaluation – it's a clear logical fallacy, but they're wedded to it – to argue against God requires an a priori acceptance of
their definition, because it's one they know they can refute. They can't accept any other because they can't refute it.
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John Gray, the notable English philosopher, an atheist, wrote a book called "
Seven Types of Atheism" in which he describes the atheist ideologies of the West as so much “spilt theology” – and that includes a scathing critique of the (so-called) Enlightenment, 'the archetype of this quest' to fashion a science of man. Unfortunately, these efforts issued in the racist pseudo-science (he cites Voltaire and Hume), while all attempts to inaugurate the rule of reason have resulted in bloody fanaticisms (Jacobinism and Bolshevism), that have equaled the worst atrocities attributable to believers, and such 'sciences' as eugenics which even after WWII was practiced (albeit discreetly) in such civilised countries as yours and mine ...
Gray reckons Carl Becker's "
The Heavenly City of the Eighteenth-Century Philosophers" (1932) is still “the best book on the Enlightenment”. In Becker's view, the philosophers “demolished the Heavenly City of St. Augustine only to rebuild it with more up-to-date materials.” Gray’s verdict is even harsher: “Racism and anti-Semitism are not incidental defects in Enlightenment thinking. They flow from some of the Enlightenment’s central beliefs.”
Gray argues a belief that humanity will eventually arrive at lasting peace and happiness merely recapitulates Christianity’s salvation history in humanist terms.
He reckons that very few, 'mostly marginal figures', have achieved the necessary detachment to arrive at a genuine break with religious thinking. Most atheists in his view 'search for a surrogate Deity to fill the hole left by the God that has departed,' a belief in science being foremost among the list of surrogates.
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Every believer is an nonbeliever really.
But that is not an argument for or against belief, more a comment on human nature.
Does it take effort to disbelieve religions you don't follow? Why?
The honest answer would be "I've never really given it any thought". Better that, than come up with some cock-eyed notion of what that religion says, and then say I don't believe that.
Christopher Hitchens is a radical, if not rabid, anti-Islamicist. He presents Islam in the most ridiculous terms, akin to saying all Germans are evil, just look at Hitler ... but loads of people buy his stuff ... because it takes no effort at all, and because the gets more jollies from hating their neighbour than loving their neighbour which is bloody hard work.
AFAIK atheists just don't believe stuff. That doesn't take them especial effort. They don't strive to not believe it.
That's OK. I'm fine with people who choose not to. I'm not fine with people who think they're more enlightened simply because they don't believe.
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As far as beliefs go, Chesterton said "Everybody has a creed. Some know what it is, others don't."