In a wonderful article from First Things entitled “God, Gods, and Fairies” , David Bentley Hart writes regarding atheism:
It is the embrace of an infinite paradox: the universe understood as an “absolute contingency.” It may not amount to a metaphysics in the fullest sense, since strictly speaking it possesses no rational content—it is, after all, a belief that all things rest upon something like an original moment of magic—but it is certainly far more than the mere absence of faith.