1. Clarifying the Concept of God
By “God” we do not mean one being among others within the universe. Rather, God is understood as the maximally great reality—that which nothing greater can be conceived. God is not a physical object or a composite entity but is traditionally understood, in classical Christian theism, as pure spirit: immaterial, simple (without parts), and independent of anything else for existence.
This clarification avoids the mistake of treating God as merely another entity alongside trees, planets, or persons.
2. The Core Claim
Claim: The existence of a maximally great spirit is possible and plausible.
This is not a claim of certainty, but of rational permissibility and reasonableness.
3. Simplicity and Non-Physicality
Physical entities are composed of parts and depend on external conditions to exist and persist. Anything with parts can be destroyed, altered, or fail to exist if those parts are separated. A maximally great being, if it exists, cannot be dependent in this way, because dependence implies limitation.
Therefore, maximal greatness plausibly entails non-physicality and simplicity. A simple, immaterial spirit would not depend on components and would therefore be metaphysically greater than any composite physical entity.
4. Coherence of a Simple Spiritual Mind
The idea of a simple, unified mind is not incoherent. Human minds, while associated with brains, are experienced as unified centers of thought despite having many changing thoughts, emotions, and experiences. This suggests that the concept of a simple conscious subject is intelligible and not self-contradictory.
Thus, the concept of God as a maximally great spirit is coherent.
5. Maximal Attributes
A maximally great spirit would possess properties such as perfect power, intelligence, and goodness. These attributes are not arbitrarily assigned but follow from the definition of maximal greatness: if a being lacked any such perfection, it would not be maximally great.
This distinguishes God from imagined entities like a “maximally great unicorn.” A unicorn would necessarily be a finite, created, physical being and therefore could not qualify as maximally great.
6. Rational Belief and Practical Considerations
If the concept of a maximally great spirit is coherent and its existence is possible, then belief in such a being is rationally permissible. Furthermore, if such a being exists and is personal, then relationship with that being would be possible only if one were open to belief.
This is not a proof but a plausibility argument: belief in God is a reasonable position, not an irrational one.
The Refutation
1. Limits of Human Understanding
Human beings frequently misunderstand moral and evaluative concepts such as goodness, perfection, and greatness. If maximal greatness depends on fully understanding these concepts, then no human is in a position to assert confidently what a maximally great being would be like. The argument risks using impressive-sounding terms without precise content.
2. The Problem of Spirit
The argument assumes that being a spirit is a positive perfection. However, this is not self-evident. We do not have independent proof that spirits exist, nor that disembodied existence is intrinsically good.
In fact, Christian theology itself suggests that embodiment is valuable, since it affirms bodily resurrection rather than eternal disembodied existence. This implies that being “only spirit” may be incomplete or deficient, rather than maximally perfect.
A purely spiritual being might lack capacities that require embodiment, such as physical interaction or sensory experience.
3. The Problem of Suffering and Action
A purely spiritual God cannot suffer or act in physical ways unless an additional nature is assumed (as in the Christian doctrine of incarnation). This raises the question of whether maximal greatness requires the ability to suffer with others or act concretely in the world. If so, pure spirituality may be a limitation rather than a perfection.
4. The Problem of Unused Perfection
Christian theology often claims that God is perfect even if God creates nothing. But many forms of goodness—such as generosity, creativity, compassion, and self-sacrifice—seem to require expression in action and relationship. A being who possesses these only “in principle” may be perfect in one sense but deficient in another.
5. The Moral Challenge from Atheism
Consider a hypothetical world without God in which a mother loves and sacrifices for her child. If her love arises without divine assistance or grounding, it may appear more praiseworthy precisely because it exists “against the grain,” without cosmic guarantees or rewards.
This suggests that some forms of goodness may be more authentic in an atheistic framework than in a theistic one. If so, God cannot coherently be described as the source of all goodness without diminishing the moral value of creaturely goodness.
6. Conclusion of the Refutation
If God is defined as the source of all perfection, yet there are conceivable forms of goodness that do not depend on God—or that seem diminished by such dependence—then the concept of God as absolutely perfect becomes questionable. The claim that belief in God is uniquely coherent or superior is therefore not established.