Many thinkers and philosophers have made asserted the possibility of a divine being through logic and reason.

"Kurt Godel's Ontological Proof" is a notable example of an attempt to prove that God's existence is possible. Atheists have used an equal amount of arguments, including the use of Occam's Razor , for their case. However, neither the theist nor the atheist factions have had a decisive advantage in proving or disproving the existence of a divine being, resulting in both sides believing on faith.

There are atheists who have converted to theism. If arguments used by atheists were so conclusive, obvious, and absolute, very few atheists would become theists (especially among atheist philosophers). Case in point, Anthony Flew, a former atheist philosopher and activist with many well-published books arguing against theism, is one such person who renounced his atheism. Another example is C.S. Lewis, who was a staunch and militant atheist for much of his youth (insisting that all religions must be called 'mythologies'), but converted to Christianity in the 1930's and wrote many books defending it from atheism.

For militant atheists to claim their beliefs are "rational" and that theists are delusional/irrational/ignorant/insane/unintelligent, therefore, speaks much of their own irrationality and close-mindedness, in their fanatical devotion to something that is so vague and inconclusive from a truly logical and scientific viewpoint.

- Anthony Flew, explaining his conversion from atheism to deism in an interview

"These are extremely serious matters and there is no legitimate place for small minds, petty souls, and studied ignorance."
- Bernard Ramm, Baptist theologian