An atheist believes
‘I have faith and belief myself. I believe that the universe is comprehensible within the bounds of natural law and that the human brain can discover those natural laws and comprehend the universe. I believe that nothing beyond those natural laws is needed.’
‘I have no evidence for this. It is simply what I have faith in and what I believe.’
Isaac Asimov, Counting the Eons, Grafton Books (Collins), London, p.10.