A popular tendency among some atheists these days is to define atheism, not as the positive thesis that God does not exist, but as the neutral claim that an atheist is one who simply lacks belief in God. If we could scan the mind of the atheist and catalogue all the beliefs the atheist holds, we would not find a belief of the form, “God exists.” Those who insist on defining atheism in this manner want to avoid the implications of having to defend the claim that God does not exist. They demand justification for faith in God while insisting that they bear no rational burdens in the debate since they are not making any positive claims on the question of God’s existence.
This strategy is mistaken on several levels. To begin with, there is no logical connection between a lack of belief about God in someone’s mind and the conclusion that God does not exist. At best, this definition leads us to agnosticism, roughly the view that we do not know whether or not God exists. For example, there are millions of people on this planet who hold no belief about the Los Angeles Lakers. But it would be quite a stretch to conclude from that empirical fact that the Lakers therefore do not exist.