"Justifying the claim that something does not exist is not quite the same as proving or having arguments that it doesn't, but it is what we are talking about. That is, we need not have a proof that God does not exist in order to justify atheism. Atheism is obligatory in the absence of any evidence for God's existence." Michael Scriven, "God and Reason" Critiques of God (Buffalo, NY: Prometheus, 1997) p. 105.