You: That is not true. I could identify an act that has a beneficial effect on society and label it good. From that definition I could build an image of perfect goodness.

Aaron: Such an attitude is arbitrary and dangerous. If you did not select your "good" act carefully, your reasoning could lead you to bizarre extremes.

You: Like believing that if it is good to wipe out one enemy then it is better to wipe out whole towns if they contain enemies?

Aaron: Well, yes actually. Such a blanket statement it wrong and anyone with beliefs is evil.

You: I agree that I would have to be careful in my selection of which actions are good and which are not, but there is nothing to stop me from hashing out the philosophical problems myself. I can't see any reason for God to get involved.

Aaron: Without God, you will always be in danger of reaching incorrect conclusions.

You: But I may reach correct conclusions, which just goes to show that God is not necessary for the existence of good.

Aaron: On the contrary, any definition of good which leaves out the divine good is wanting.

You: I would argue that any definition of good which falls back on lists of rules from some mythical being is inferior to one which allows its devotee to make decisions for herself.

Aaron: It is just that sort of "morality of convenience" which has led to your present, sorry state.