Philosophy / Ethics • Existence of God • Introductory
Moral Argument
Primary question: What grounds objective moral obligations?
Argument map
Click any node to inspect it. Expand branches to go deeper.
Common mistakes
Don't say
"You can't be good without God."
Instead
"You can be good without believing in God; the question is what makes goodness real."
Don't say
Treating Euthyphro as a trick question.
Instead
Answer it directly with the nature-of-God option and explain why that is not a dodge.
Don't say
Ignoring secular moral realism.
Instead
Name Wielenberg or Enoch and engage the grounding question they actually raise.
What would change my mind? — Christian position
A convincing naturalistic account of binding obligations and of our reliable access to them would remove the argument's force.
What would change my mind? — Skeptical position
Sustained failure of secular grounding projects, plus the coherence of divine-nature theories, would strengthen it.
Why does this matter?
It is the argument most people feel before they can state it — and it connects abstract metaphysics to how a person actually lives.
For further study
Primary and secondary sources on both sides of this question. Reading the strongest opposing case is part of the work, not a concession.
Finite and Infinite Goods — Robert Merrihew Adams
The most rigorous theistic moral framework in contemporary philosophy.
God and Moral Obligation — C. Stephen Evans
The clearest defense of the divine command account of obligation specifically.
Robust Ethics — Erik Wielenberg
The strongest atheist non-natural realism; the position the argument must actually defeat.
Ethics: Inventing Right and Wrong — J. L. Mackie
The classic error theory, including the argument from queerness that theists often repurpose.
The Moral Landscape — Sam Harris
A popular naturalist attempt to derive values from wellbeing; read alongside its philosophical critics.