In all the discussions of atheism, I have not yet seen any one make what I take to be a rather simple point: atheism is always relative to a specific conception of God. For this reason, one can be an atheist in one sense and a theist in another. This in turn raises the question whether an atheist is intellectually compelled to investigate every conception of God and refute each of them in order to be entitled to his or her atheism. I want to make a preliminary, crude, and rather obvious distinction between two ways of conceiving of God in order to clarify two distinct kinds of atheism: the mythological conception and the metaphysical conception.