What is the difference between univocal predication, equivocal predication, and analogical predication in philosophy of theology?

This question brings us to the heart of one of the most complex investigations in philosophy of theology: how can we speak about God using limited human language? This question has occupied philosophers and theologians from Plato to the present day, and reached its pinnacle in the medieval period with Thomas Aquinas, Averroes (Ibn Rushd), and Maimonides (Ibn Maymūn). Understanding the difference between these three types of predication is necessary for understanding any serious discussion about the possibility of divine knowledge.

Inadequate Responses to Be Avoided

On the part of some believers, three common responses are insufficient:

"We speak about God in the same way we speak about humans." This falls into naive anthropomorphism. If God's attributes are exactly identical to human attributes, we have made Him limited like us. This is what Maimonides warned against in the "Guide for the Perplexed" and Thomas Aquinas in the "Summa Theologica."

"God is completely beyond language; nothing can be said about Him." This falls into absolute agnosticism. If God is completely beyond language, how do we explain the sacred texts that describe Him? And how do we distinguish between different religions? This position ends up canceling theology itself.

"The issue is purely linguistic with no philosophical importance." A serious error. The issue is not about words, but about the possibility of divine knowledge itself. If we do not solve the problem of religious language, we cannot speak about God in any meaningful sense.

On the part of some atheists, two responses are also insufficient:

"Religious language is all poetic metaphor without real meaning." This is an inadequate simplification. Even if we reject univocal predication, analogical predication is not mere poetry, but has a precise logical structure developed by great philosophers. Rejecting it requires philosophical critique, not mere dismissal.

"Contradictions in divine attributes prove that religious language is contradictory." This assumes that religious language must be univocal. But this is precisely what most serious theologians deny. Criticism must deal with the theory of analogy, not ignore it.

Why These Responses Are Inadequate

The responses from both sides share a common error: failure to understand the philosophical complexity of the issue. The question is not "Can we speak about God?" but "What is the logical nature of this speech?" Confusing these two levels leads to sterile discussions.

The Three Types of Predication

Univocal Predication. When we use the same word with exactly the same meaning in different contexts. Example: "Zayd is wise" and "Amr is wise"—the word "wise" has the same meaning in both sentences.

In the theological context: If we say "God is wise" and "Socrates is wise" with univocal predication, we are saying that wisdom in God is exactly the same wisdom as in Socrates, only to a greater degree. Duns Scotus defended a modified form of this position.

The problem: It leads to anthropomorphism. If God's attributes are identical to ours, we have made Him limited like us.

Equivocal Predication. When we use the same word with completely different meanings. Example: "spring of water" and "eye of a human"—the word has two completely different meanings.

In the theological context: If we say "God is wise" and "Socrates is wise" with equivocal predication, the word "wise" has a completely different meaning in each case, with no relationship between them. Moses Maimonides leaned toward this position in his interpretation of negative attributes.

The problem: It leads to agnosticism. If our words about God have no relationship to their human meanings, we do not know what we are saying.

Analogical Predication. A middle ground between the two: the word has a similar but not identical meaning. The meaning is not completely the same (as in univocal) nor completely different (as in equivocal), but carries a similarity in proportion or relationship.

Thomas Aquinas developed this theory in depth. His classical example: we say "food is healthy" and "animal is healthy." The word "healthy" does not have the same meaning (food does not have inherent health), but it does not have completely different meanings either (there is a relationship: food causes health in the animal).

In theology: "God is wise" and "Socrates is wise"—wisdom in God is not identical to wisdom in Socrates, but there is an analogical relationship: what human wisdom is to humans, divine wisdom is to God, with the difference that God's wisdom is essential and unlimited, while human wisdom is accidental and limited.

Historical Development of the Discussion

In Islamic philosophy, the Ash'arites and Mu'tazilites discussed a similar issue regarding divine attributes. The Ash'arites affirmed attributes while maintaining transcendence, while the Mu'tazilites denied them for fear of anthropomorphism. Averroes in "Faṣl al-Maqāl" proposed a solution resembling Aquinas's analogy.

In Jewish philosophy, Moses Maimonides in the "Guide for the Perplexed" leaned toward negative theology (via negativa), but his students developed positions closer to analogy.

In Christianity, the conflict reached its peak between Thomas Aquinas (analogy), Duns Scotus (a form of univocity), and William of Ockham (nominalism).

Contemporary Discussion

In the twentieth century, the discussion returned with force:

Logical positivism (Ayer, Carnap) rejected religious language entirely as meaningless. But this position collapsed with the collapse of logical positivism itself.

Later Wittgenstein opened a new door: religious language has its own special "language game," not to be evaluated by the criteria of scientific language.

Critical realism (Ian Barbour, John Polkinghorne) developed a contemporary version of analogy: both scientific and religious models are cognitive metaphors pointing to a reality that transcends them.

Where We Stand in This Discussion Today

The contemporary philosophical consensus tends to reject naive univocity and absolute equivocation, searching for complex forms of analogy. Even analytic philosophers like Alvin Plantinga and Richard Swinburne, despite their inclination toward conceptual clarity, accept that language about God has special characteristics.

The crucial point: The issue is not only linguistic, but epistemological and metaphysical. Your position on the nature of religious language determines your position on the possibility of divine knowledge, on the nature of revelation, and on the relationship between the finite and the infinite.

For Advanced Reading

- Advanced level: The relationship between Aquinas's theory of analogy and the theory of names and attributes in Islamic kalām
- Thomas Aquinas, Summa Theologica, I, Q.13 (on divine names)
- Moses Maimonides, Guide for the Perplexed, I.50-60 (on negative attributes)
- David Burrell, Analogy and Philosophical Language (Yale UP, 1973)
- Ralph McInerny, Aquinas and Analogy (Catholic University Press, 1996)
- "Religious Language" entry in Stanford Encyclopedia of Philosophy