Moral Objectivism.

Can Moral Objectivism Do Without God?

The most discussed moral argument for God’s existence is currently the argument concerning the ontological basis for objective moral values:

1. If God does not exist, objective moral values do not exist
2. Objective moral values do exist
3. Therefore, God exists.

Although consistent atheists must avoid accepting both premises of this logically valid syllogism, it’s not hard to find atheists who endorse either premise. Hence, this argument can be defended by quoting exclusively from atheists.

Read more: http://www.bethinking.org/right-wrong/advanced/can-moral-objectivism-do-without-god.htm