What is the problem of evil: three millennia of one paradox and why it still destroys theological systems
The problem of evil is not an abstract philosophical game, but a logical paradox that challenges the basic attributes of God in monotheistic religions. The classical formulation belongs to Epicurus (341–270 BCE): if God wishes to prevent evil but cannot — he is not omnipotent; if he can but does not wish to — he is not good; if he neither can nor wishes to — why call him God; if he both can and wishes to — where then does evil come from? (S004)
This tetralemma remains the central challenge for any theistic philosophy. Three centuries of attempts to solve it — from Augustine to Leibniz, from Hegel to contemporary analytic philosophy — have not led to consensus. Every theodicy either sacrifices one of God's attributes, redefines the nature of evil, or appeals to mystery. More details in the Critical Thinking section.
🧩 Logical structure of the paradox: three incompatible statements
The problem of evil rests on three premises considered axiomatic in classical theism:
- God is omnipotent — can do everything logically possible.
- God is omnibenevolent — desires only good for his creations.
- Evil exists — suffering, pain, injustice are empirically observable. (S004)
If all three statements are simultaneously true, a logical contradiction arises: an omnipotent and omnibenevolent God should eliminate evil, but evil exists.
⚠️ Two types of evil: moral and natural
Philosophers distinguish moral evil (murder, war, betrayal) — the result of free actions by rational beings — and natural evil (earthquakes, disease, death of children) — suffering caused by natural processes. (S004)
| Type of evil | Source | Standard explanation | Problem |
|---|---|---|---|
| Moral | Human free will | God gave choice, evil is the price of freedom | Doesn't explain natural evil |
| Natural | Natural processes | Necessary for the physical world | A child with cancer made no moral choice |
A child dying of cancer made no moral choice, and their suffering cannot be justified by free will. An earthquake killing thousands of innocents is not connected to human decisions.
🔎 Historical evolution: from Epicurus to modal logic
In antiquity, Epicurus formulated the paradox but did not develop it into a systematic critique of theism. In the medieval period, Augustine and Thomas Aquinas created the first theodicies, explaining evil as privatio boni (absence of good) or as a necessary condition for manifesting divine justice. (S005)
- Leibniz (1646–1716)
- Developed the concept of the "best of all possible worlds," arguing that our world, despite evil, is optimal in terms of the balance of good and freedom. (S007)
- 20th century: analytic philosophy
- Mackie, Plantinga, Rowe formalized the problem in terms of modal logic. The logical version can be solved through the possibility of free will, but the evidential version (probabilistic) remains unsolvable. (S004)
Each historical period reformulated the problem in the terms of its era, but the logical core of the paradox remains untouched.
The Steel Version of Theodicy: Seven Strongest Arguments Defending Divine Permission of Evil — and Why They Seem Convincing
Before examining theodicy's weaknesses, we must present it in its strongest form. The steelman approach requires considering an opponent's best arguments, not caricatured versions. Below are seven of the most intellectually honest attempts to solve the problem of evil, which have withstood centuries of criticism and are still defended by serious philosophers. More details in the Media Literacy section.
🛡️ The Free Will Argument: Evil as the Inevitable Price of Moral Choice and Genuine Love
The most popular theodicy argument: God created beings with free will because only free beings are capable of genuine love, moral development, and meaningful relationships with the Creator. (S004) But free will logically includes the possibility of choosing evil.
A world where humans are programmed to do only good is a world of robots, not moral agents. Therefore, moral evil (murder, betrayal, cruelty) is not the result of divine desire, but an inevitable consequence of the gift of freedom. God could not create free beings who never choose evil, because that's a logical contradiction, like a "square circle."
🧠 Soul-Making Theodicy: Suffering as a Necessary Condition for Virtue Formation and Spiritual Growth
This argument, developed by Irenaeus of Lyon (2nd century) and modernized by John Hick (20th century), claims: the world was created not as a hedonistic paradise, but as a "vale of soul-making." (S004) Virtues — courage, compassion, patience, sacrifice — cannot develop in a world without challenges.
Courage is impossible without danger, compassion without others' suffering, patience without trials. God permits evil to create conditions for moral and spiritual growth, which is impossible in a world without resistance. Suffering is not an end in itself, but a pedagogical tool.
Virtues are not born in a vacuum of comfort. They require material for exercise — and that material is often painful.
⚙️ Leibniz's "Best of All Possible Worlds" Concept: Optimization Between Good, Freedom, and Diversity
Gottfried Wilhelm Leibniz in "Theodicy" (1710) proposed: God, being perfect, created the best of all logically possible worlds. (S007) This doesn't mean the world is ideal in the sense of lacking evil, but that it's optimal in terms of balance between good, free will, diversity, and natural laws.
Any alternative world with less evil would contain less good or freedom. For example, a world without physical laws (where earthquakes are impossible) would be chaotic and unsuitable for intelligent life. A world without free will (where moral evil is impossible) would be a world of automatons. Our world is a compromise that maximizes overall good.
🔁 Evil as Privatio Boni (Absence of Good): The Ontological Theory of Augustine and Plotinus
Augustine of Hippo, drawing on Plotinus's Neoplatonism, argued: evil has no ontological status of its own; it's not a substance but an absence of good, as darkness is the absence of light and cold the absence of heat. (S005) Plotinus wrote: "Evil is a lack of measure, limit, and form" — that is, a deficit of being, not a positive essence.
If evil is not a creation but an absence of creation, then God bears no responsibility for its existence. He created only fullness; evil arises in the voids.
God created only good; evil arises when creatures deviate from divine order, losing fullness of being. This explains why God didn't create evil: He created only positive entities, and evil is a parasitic absence arising from free choice or material imperfection.
🧬 The Eschatological Argument: Temporary Evil as a Condition for Eternal Good and Ultimate Justice
Christian theodicy often appeals to eschatology: present suffering is a temporary stage in a cosmic drama that will conclude with resurrection, judgment, and eternal bliss for the righteous. (S001) Berdyaev emphasized: "Evil has a temporary character, good is eternal."
From the perspective of eternity, any finite suffering is negligible compared to infinite good. Moreover, suffering in this world can be compensated in the next: victims of injustice will receive recompense, and evildoers punishment. The problem of evil dissolves when viewing not a single moment in time, but the entire history of salvation.
🕳️ Epistemological Humility: The Limitation of Human Reason Before Divine Design
This argument, tracing back to the Book of Job, claims: human reason is too limited to understand divine purposes. (S004) What seems to us like meaningless evil may be part of a broader plan inaccessible to our understanding.
Analogy: a child doesn't understand why a doctor gives a painful vaccination, but an adult knows it's protection from greater evil. We are to God as children are to adults. Demanding that God explain every suffering is a manifestation of intellectual pride. The absence of a visible reason doesn't mean the absence of any reason at all.
🧷 Evil as Necessary Contrast: Without Darkness It's Impossible to Appreciate Light, Without Suffering — Joy
This argument claims: good and evil are interdependent concepts, like up and down, hot and cold. (S007) Hegel developed the idea that contradiction (including moral evil) is the driving force of the dialectical development of spirit.
Without evil we couldn't appreciate good, without suffering — joy, without death — life. A world without contrasts would be monotonous and meaningless. Evil plays the role of background against which the beauty of good manifests. This doesn't justify specific acts of cruelty, but explains why a world with some amount of evil might be better than a world without evil at all.
- All seven arguments rely on logic, not empirical facts.
- Each solves the problem of evil in one dimension but creates new questions in others.
- Their persuasiveness depends on which premises you're willing to accept: about the nature of freedom, time, justice, and God's knowability.
Evidence Base: What Sources Say About Attempts to Solve the Problem of Evil — and Where Each Theodicy Suffers Logical Collapse
Systematic analysis of specific philosophical solutions reveals one pattern: every theodicy either narrows God's definition or redefines evil so it ceases to be a problem. No approach simultaneously maintains all three classical attributes: omnipotence, omniscience, and absolute benevolence. More details in the Debunking and Prebunking section.
📊 Plotinus and Neoplatonic Theodicy: Evil as Privation of Being and the Hierarchy of Emanations
Plotinus (204–270 CE) developed an ontological theodicy through a hierarchy of being. According to his system, (S005) "evil is a deficiency of measure, limit, and form" — a deficit of structure. Reality is organized as a series of emanations from the One (supreme good) through Intellect and Soul to matter. The farther from the One, the less being and the more evil.
Matter is the "final limit of descent," where being is minimal. (S005) Plotinus argued that emanation is not an act of will but a natural "overflow" of being, like light from the sun. But this merely relocates the problem: why does the perfect One generate an imperfect system?
The concept of evil as "absence" fails to explain active, destructive evil — torture, genocide, sadism. This is not merely a lack of good, but a positive drive to inflict suffering.
🧪 Leibniz and Optimization Theodicy: Mathematics of Possible Worlds and the Problem of Excessive Evil
Leibniz in "Theodicy" (1710) proposed a formal model: God chose the world that maximizes good while minimizing evil. (S007) He distinguished three types of evil: metaphysical (imperfection of creatures), physical (suffering), and moral (sin). Physical evil often serves to prevent greater moral evil, while moral evil is an inevitable consequence of free will.
The critique is devastating. The Holocaust, Rwandan genocide, millions of children dying from starvation — what "greater good" justifies these scales? (S004) Voltaire in "Candide" (1759) ridiculed Leibnizian optimism after the 1755 Lisbon earthquake: if this is the "best of all possible worlds," how horrific must the worst ones be?
- If God is omnipotent, He could have created a world with the same free will but less evil.
- For example, a world where humans are free, but physical laws prevent genocide (weapons don't work against the innocent). (S004)
- Modern modal logic demonstrates: such a world is logically possible.
🧾 Hegel and Dialectical Theodicy: Evil as a Moment in the Development of Absolute Spirit
Georg Wilhelm Friedrich Hegel (1770–1831) integrated the problem of evil into his dialectical system. Evil is not a static entity but a necessary moment in the development of Absolute Spirit. (S007) Contradiction (including moral evil) is the driving force of history: thesis generates antithesis, their conflict resolves in synthesis at a higher level.
The problem with Hegelian theodicy is its abstractness and moral insensitivity. (S007) Telling a torture victim that their suffering is a "necessary moment of dialectical development" is not explanation but mockery. Hegel doesn't explain why Absolute Spirit couldn't develop without monstrous costs.
| Theodicy | Justification Mechanism | Critical Vulnerability |
|---|---|---|
| Plotinus | Evil = privation of being in hierarchy | Fails to explain active, destructive evil |
| Leibniz | Best of all possible worlds | Excessive evil; logically better worlds possible |
| Hegel | Evil as moment of dialectical development | Moral indifference; humans as expendable material |
🔎 Berdyaev and Existential Theodicy: Evil as Result of the Freedom of Nothingness and the Tragedy of Creation
Nikolai Alexandrovich Berdyaev (1874–1948) proposed a radical version of theodicy based on the concept of "meonic freedom" — freedom preceding being. (S001) Evil is rooted in irrational freedom, in that primordial nothingness from which God created the world. God did not create evil, but could not eliminate the possibility of evil without destroying freedom, which is ontologically primary.
Berdyaev distinguished two types of freedom: "freedom in God" (freedom for good) and "freedom from God" (freedom to choose evil). (S001) This position removes direct responsibility for evil from God, but creates a new problem: if freedom precedes God, then God is not omnipotent — He is limited by pre-existing freedom. This contradicts classical theism.
Berdyaev's concept fails to explain natural evil. Earthquakes and epidemics are unrelated to human freedom. They result from physical laws that God established. Why would an omnipotent and benevolent God create a world with tectonic plates that kill children? (S004)
Each of these theodicies solves one problem while creating two new ones. The principle of simplicity offers no help here: the more complex the system, the more failure points. This is not coincidence — it's a structural property of the task itself.
The Mechanism of the Paradox: Why the Problem of Evil Is Unsolvable Within Classical Metaphysics — and What This Reveals About the Nature of Rational Thinking
The problem of evil remains unsolvable not due to lack of intellectual effort, but because of the fundamental incompatibility of three premises of classical theism. This is not an empirical problem (which could be solved with new data), but a logical one (which requires abandoning one of the axioms). More details in the Logic and Probability section.
🧬 Logical Incompatibility: Why Three Attributes of God Cannot Be Simultaneously True
Formal logic demonstrates: the statements "God is omnipotent," "God is omnibenevolent," and "Evil exists" form an incompatible set. (S004) If God is omnipotent, He can eliminate any evil. If He is omnibenevolent, He desires to eliminate any evil. Therefore, if both attributes are true, evil should not exist.
But evil exists. Ergo, at least one of the attributes is false. This is not a matter of interpretation, but a formal contradiction.
Attempts to avoid the contradiction through redefinition of terms (for example, "omnipotence does not include the logically impossible") merely shift the problem. If God cannot create a world with free will without evil, then either He is not omnipotent, or such a world is logically impossible — but why? (S004)
🔁 The Problem of Natural Evil: Why the Free Will Argument Fails for Earthquakes and Cancer
Even if we accept the free will argument for moral evil, it is powerless against natural evil. (S004) A child dying from leukemia made no moral choice. An earthquake killing thousands of people is unrelated to human freedom.
Epidemics, droughts, predators devouring their prey alive — all this is evil built into the structure of nature, which God presumably created.
- Theodicy explains natural evil through "laws of nature": God created an ordered world, and earthquakes are a side effect of tectonic activity.
- But an omnipotent God could have created a world with the same laws but without catastrophic side effects.
- Or intervened at critical moments (for example, stopping the 2004 tsunami before it killed 230,000 people).
⚙️ The Evidential Problem of Evil: The Quantity and Distribution of Suffering Is Incompatible with a Benevolent God
Even if the logical problem of evil is solvable through free will, the evidential problem remains. (S004) The evidential argument asserts: the quantity, intensity, and distribution of evil in the world make the existence of an omnibenevolent God extremely improbable.
Not every specific evil is inexplicable, but their totality is.
| Category of Excessive Evil | Problem for Theodicy |
|---|---|
| Animal suffering for millions of years before humans appeared | What moral purpose did it serve? |
| Infants dying in agony from disease | What lesson or spiritual growth does this provide? |
| Genocides where millions of innocents are killed | What "greater good" does this produce? |
Theodicy cannot explain why a benevolent God would permit such scales of suffering. (S004) The argument "this serves spiritual growth" doesn't work for infants. The argument "this is necessary for free will" doesn't work for diseases. The argument "we cannot understand the divine plan" is an abandonment of explanation, not an explanation.
🔀 Why Rational Thinking Reaches Its Limit Here
The problem of evil demonstrates a fundamental limitation of rational thinking: it can identify logical contradictions, but cannot resolve them if they are built into the system of axioms itself. Occam's Razor suggests choosing the simplest explanation — but here all explanations are equally complex.
Theodicy requires either abandoning one of God's attributes (He is not omnipotent, not omnibenevolent, or does not exist), or redefining the concepts themselves (which makes them unfalsifiable, but also meaningless). (S003) This is not a failure of intellect, but a structural property of logic: a system with contradictory axioms cannot be simultaneously consistent and complete.
Rational thinking can show that the problem is unsolvable within classical metaphysics. But it cannot force a person to abandon faith — because faith operates in a different coordinate system, where logical contradiction is not an obstacle.
This does not mean that faith is irrational. It means that it lies beyond the boundaries of what rational thinking can judge. Epistemic intrusion begins precisely here: when logic claims the right to judge metaphysical systems that by definition extend beyond logic.
