Bertrand Russell on The moral argument
Russell argued that linking morality to God's will makes ethics arbitrary and that moral intuitions are independent of theology.
In Why I Am Not a Christian, Russell addressed the moral argument with characteristic clarity. If the difference between right and wrong is due to God's fiat, then for God himself there is no difference between right and wrong — and saying that God is good becomes meaningless. If, on the other hand, right and wrong exist independently of God, then they do not need God as their foundation.
Russell pointed out that moral progress has consistently required overriding scriptural commands, not following them. The abolition of slavery, the recognition of women's equality, and the condemnation of religious persecution all required rejecting biblical morality. This pattern suggests that moral understanding comes from human reason and empathy, not divine revelation.
He also challenged the idea that morality requires cosmic enforcement. People are moral because of empathy, social instinct, and rational reflection — not because they fear punishment or hope for reward. A morality motivated by fear is, Russell argued, not morality at all.
“If you are quite sure there is a difference between right and wrong, then you are in this situation: is that difference due to God's fiat or is it not? If it is due to God's fiat, then for God himself there is no difference between right and wrong.”