When we are told by a perfect stranger that he believes in God, we still don’t know much about the person. That is partly because the word “belief” is used all too flippantly these days. For some, to say “I believe in God” mean little more than “I haven’t gotten around yet to denying the existence of God.” But there is another reason why a person’s assertion of belief in God is seldom very illuminating about that person. That is because two people who believe in God may believe radically different and incompatible things about God; or, to put it another way, one person’s theism is another person’s atheism. To say “I believe in God,” then, is to say almost nothing.