Francisco Suarez argues that being of a thing is and existence that a thing is are really distinct components. For everything created these the essence of a thing does not automatically include its existence. Essence does not hold existence; that is, only in God is essence and existence identical. To be able to explain how we can predicate terms like being good or powerful of both god and creatures without collapsing the radical ontological difference between them. Francisco Suarez develops a careful doctrine of the Analogy of Being. Prediction between God and creatures is neither completely different senses nor exactly the same senses, but there is a proportionate similarity in real ontological asymmetry.
Late scholastics and early modern metaphysicians debated whether existence is a real property distinct from essence. The medieval Thomistic tradition had emphasized a real distinction in creatures, while some other medieval and early modern philosophers raised worries about whether this distinction is coherent or whether this distinction coherent or it threatens divine ideology or leads to a dramatic multiplicity of beings. Debate about the Analogy of Being: how can the same predicates apply to god and creatures without using languages that either make god’s transcendences seem ordinary or treat God as just another being like everything else?
Suarez’s reasoning proceeds through several steps.
We can conceive an essence without knowing its existence, like we can define phoenix, dragon or unicorn, even though no such beings exist. He concludes that this clear, understandable distinction shows a real metaphysical structure. He explains that the concept of essence, what a thing is, couldn’t exist if essence and existence were truly the same. A purely logical distinction wouldn’t account for why some possible essences never actually exist.
If essence entailed existence, no creature would be contingent and every possible essence would automatically be real. By affirming a real distinction, Suarez can explain how created beings depend on God’s creative act for their existence. In De Legibus ac Deo Legislatore (1612), he connects this metaphysical dependence to moral dependence. The fact that creatures could fail to exist is the reason they tend to follow God’s law.
The identity of essence and existence belongs to God alone. God’s essence is to-be. creatures receive being from God. Thus, Suárez preserves both divine necessity and created contingency. This creates a ranked view of reality, where the act of existing is shared or experienced in different ways at different levels of being.
Having established this metaphysical structure, Suarez asks how we can meaningfully apply predicates such as being, good, or wise to both God and creatures? The two options of exactly the same sense and completely different senses are, for him, equally unacceptable. Exactly the same sense would erase transcendence, while completely different senses would render theology meaningless. Suarez, therefore articulates a doctrine of analogy of being. Predicates are applied to God and creatures according to proportional similarity rather than strict identity or total difference. As he says, the name being is said of God and creature analogically, according to an order of priority and posteriority founded upon real dependence. God is the primary analogy of being and creatures possess being by participation.
John P. Doyle (1995) explains that Suarez reforms the medieval concept of analogy to meet the standards of systematic metaphysics. Analogy is no longer a linguistic convenience but a reflection of real proportional order within being itself. This reformulation allowed Suarez’s system to be read by early-modern philosophers as a rational metaphysics capable of supporting both theology and emerging natural philosophy.
Suarez’s position and claims attracted criticism and discussion. Critics argued that the real distinction multiplies entities unnecessarily and that the analogy of being cannot provide determining meaning. But Suarez replies back with and says the distinction introduces no new substance but simply identifies two intrinsic principles in the same being. The act of existence is not a separate thing but the true and pure reality of the essence. Regarding analogy, he argues that when we describe God and creatures using the same terms, there’s a single underlying meaning, one perfection that is expressed in different ways depending on the context. This careful system of using analogy keeps religious discussions understandable while still respecting God’s beyond human nature.
Francisco Suarez’s combination of careful philosophical reasoning and balanced theological views had a major impact on early-modern thinking. As Roger Ariew shows, both Rene Descartes and Gottfried Wilhelm Leibniz read Suarez’s Disputationes and adapted his theory of distinctions and individuation to their own systems (Ariew 2012).
Descartes’s notion of real distinction between mind and body is somewhat similar to Suarez’s structural approach to metaphysical composition and Leibniz’s theory of monads retains Suarez’s idea of created substances as finite participations in being. Marco Sgarbi (2010) argues that Suarez’s work was a connection between scholasticism and rationalism, offering the precision that early moderns required while maintaining the ontological depth of medieval thought.
Suarez also had a profound influence on early modern political theory, particularly ideas that would later contribute to the development of democratic thought. In De Legibus ac Deo Legislatore (1612), Suarez argues that all human laws derive from divine and natural law, which in turn is rooted in God’s reason and will. Crucially, he asserts that political authority is derivative and conditional: rulers are not above the law, and their legitimacy depends on promoting the common good.
Suarez’s argument accomplishes three important goals at once. First, it gives a clear account of contingent existence, showing how creatures can be understood as essences that might or might not exist, depending on God’s creative act. Second, it affirms divine uniqueness, since only God’s essence is existence itself, guaranteeing that God necessarily exists. Third, it provides a way for human language to speak meaningfully about God through analogy, without collapsing the difference between God and creatures. By weaving together metaphysics, theology, and language, Suarez created a model of systematic thinking that shaped early modern philosophy, influenced Jesuit education, and left a mark on European thought for centuries. His careful balance of rigorous reasoning and conceptual clarity is why Disputationes Metaphysicae became one of the most widely read works of the seventeenth century, and why its ideas continued to resonate far beyond the world of scholastic philosophy.