But not only is it false that you can’t prove a universal negative (all you have to do is show something is self-contradictory), but more importantly, this claim is really an admission that it’s impossible to prove atheism! Atheism involves a universal negative, you can’t prove a universal negative, therefore, atheism is unprovable. It turns out that it is the atheist who is believing a view for which there is and can be no evidence. This argument ought to be part of the Christian’s apologetic arsenal!