Some atheists are quite explicit that their atheism comes first. One of the most famous is Richard Lewontin, a professor of genetics, who said it wasn't science that compelled him to accept a materialistic explanation of the universe. It was an a priori materialism.
John LennoxDescribing beauty is almost impossible because we perceive it, rather than describe it. If you look at a Rembrandt painting and start to try and describe what the beauty is you see, your words sound absolutely pathetic.
John LennoxEither human intelligence ultimately owes its origin to mindless matter; or there is a Creator. It is strange that some people claim that it is their intelligence that leads them to prefer the first to the second.
John LennoxRelatively, there are many scientists who believe in God. And in Oxford, where I am the Professor, there are more professors like me, who believe in God, than you think. There are not dozens of them, but they are there, and in Cambridge too, and elsewhere. We are not in a tiny minority.
John LennoxWe have only to see a few letters of the alphabet spelling our name in the sand to recognize at once the work of an intelligent agent. How much more likely, then is the existence of an intelligent Creator behind human DNA, the colossal biological database that contains no fewer than 3.5 billion "letters the longest "word" yet discovered?"
John Lennox