The Myth of the 'True World': Epicurus and Nietzsche vs. Kant and Schopenhauer
Philosophy’s deepest divide is not the one usually advertised. It is not between theists and atheists, or between optimists and pessimists, or between those who think life is easy and those who think it is hard. The deepest divide is between those who accept this world of reality — the natural world of sensation, feeling, genuine goods, and genuine harms — as sufficient for human life, and those who insist that an alleged truer world lies beyond it, and that what this world of reality offers must be transcended, denied, or subordinated to what that imagined higher world demands.
Epicurus and Nietzsche stand on one side of that divide. Kant and Schopenhauer stand on the other.
Our purpose here is not to become Nietzscheans, and it is not to condemn Kant and Schopenhauer, who were serious thinkers with genuine insights. The purpose is to use the contrast — and especially Nietzsche’s sustained critiques of both Kant and Schopenhauer — to sharpen our understanding of what Epicurus was doing, why it was necessary in his time, and why it remains necessary now. As will become clear, the battle Epicurus fought against Plato and Socrates is the same battle Nietzsche fought against Kant and Schopenhauer — two thousand years later, in different vocabulary, against philosophers who either had no idea or would not admit that they were doing what Plato had done.
This article draws closely on two outstanding videos by the YouTube channel Weltgeist: “Why Nietzsche Hated Kant” and “Why Nietzsche Hated Schopenhauer.” Many of the arguments state here come from those videos, and both are essential viewing for anyone interested in these topics. Readers are strongly encouraged to watch them and support the channel’s work.
The Hinterwelt: A Framework for Everything That Follows
Section titled “The Hinterwelt: A Framework for Everything That Follows”Nietzsche coined a German term — Hinterwelt, or “beyond-world” — to name the central error he found running through the entire Western philosophical tradition from Socrates onward. A Hinterwelt is any posited reality that lies behind, beyond, or above the world of ordinary material experience — claimed to be more real than this world, more important than this world, the only true object of philosophical or spiritual attention — while the actual world we live in is demoted to shadow, appearance, preparation, or illusion.
Nietzsche traced the Hinterwelt through a specific historical sequence. Plato invented the theory of Forms: the material world is a shadow of eternal perfect Ideas, accessible only through reason. Christianity developed this into heaven and the kingdom of God: temporal existence is mere preparation for the afterlife, the material world of marginal importance. Kant reconstructed the Hinterwelt in secular philosophical language as the Ding-an-sich — the thing-in-itself, the world as it is behind the veil of our perception, which is real but forever inaccessible to human knowledge. And Schopenhauer took Kant’s framework and filled that unknowable beyond-world with the Will — a blind, irrational, insatiable force underlying all of reality.
Each generation outside the Epicurean-Nietzschean tradition has revised the Hinterwelt. The vocabulary changes, but the underlying motivation remains identical: this world is not enough. Something beyond it is what really matters.
Wherever Nietzsche found a Hinterwelt, he also found what he called decadence — a philosophical symptom of weakness, of an inability to face the harsh realities of material existence without retreating into the fiction of a better world elsewhere. In this context, decadence does not refer to an overemphasis on pleasure, but to an unwillingness to face the reality of this world. And wherever he found decadence, he found the devaluation of life in this world: what Nietzsche sarcastically labeled the consensus sapiensium, the agreement of the wise, the false view that this life is a disease rather than a gift.
Nietzsche located the primary historical statement of this consensus in the famous dying words of Socrates. Instructed to prepare a sacrificial hen for the god Asclepius, Socrates said: “Crito, we ought to offer a hen to Asclepius — see to it and don’t forget.” Nietzsche’s reading: Socrates was saying, in his characteristic ironic way, that life is a sickness and death will cure him of it. “For him who has ears, this ludicrous and terrible last word implies: O Crito, life is a long sickness.” (Nietzsche, Twilight of the Idols, “The Problem of Socrates,” §1)
That pessimistic consensus — the philosophical agreement that life in this material world is not worth much — runs from Socrates through Plato through Christianity through Kant and reaches its most extreme expression in Schopenhauer. What Epicurus did was refuse it at the root. What Nietzsche did, two millennia later, was refuse it again — and trace it back to the same root.
Epicurus: This World Is the Real World
Section titled “Epicurus: This World Is the Real World”Epicurus (341–270 BC) began not with a preference for pleasure but with a question about the nature of the universe. Ancient biographical tradition records that as a young student he was introduced to philosophy through Hesiod’s Theogony, and that when his teachers reached the opening claim — that Chaos was the primordial reality from which everything emerged — the young Epicurus asked a simple question: where did Chaos come from? The teachers had no answer. That absence of an answer was the beginning of everything.
What Epicurus ultimately arrived at was a complete natural philosophy: the universe consists of material particles moving through void, nothing comes from nothing and nothing returns to nothing, no supernatural forces govern its operations, the gods do not intervene in human affairs, and death is the end of sensation rather than a passage to judgment, reward, or punishment in another existence. The universe operates by natural causes, and honest investigation of those causes is both possible and essential.
The consequences for ethics follow directly. If the universe is natural rather than supernatural, the standard for how to live must be found within nature itself — not handed down from above or extracted by pure reason from a realm beyond experience. Nature has provided that standard, built into every living creature from birth: the feelings of pleasure and pain. These are not arbitrary preferences or mere animal reactions to be overcome by reason. They are nature’s own instruments for guiding creatures toward what is genuinely good for them and away from what genuinely harms them. Pleasure is the goal — not because Epicurus decided he liked it, but because honest investigation of what nature actually is and how living creatures are actually constituted leads there directly.
The three pillars of Epicurean philosophy reinforce each other at every point. Physics establishes that this is a natural world operating by natural causes. Canonics — the account of how knowledge is possible — establishes that sensation, accumulated experience, and the feelings of pleasure and pain are the three reliable instruments by which we navigate that world. Ethics concludes that the good life is one in which those instruments are trusted, cultivated, and used with wisdom.
This is the direct, root-level rejection of the Platonic project. There is no Hinterwelt in Epicurus. There is no realm of Forms more real than what sensation reports. There is no noumenal world behind the phenomenal one. There is no Will underlying material existence. There are material bodies and void — the natural world, fully real, fully sufficient — and the feelings of pleasure and pain that equip every living creature to navigate it.
Epicurus understood with perfect clarity that what Nietzsche later named the Hinterwelt tradition required the devaluation of natural feeling as a guide to genuine goods. If an alleged true world lies beyond this one, as these traditions claim, then the feelings nature has provided — pleasure and pain — cannot be trusted as the standard for living well. They must be supervised, corrected, subordinated to something that has access to what is real: reason, in Plato’s version; divine grace, in Christianity’s version. Epicurus refused this. The feelings are not deceiving instruments that lead us away from truth. They are nature’s own truth-telling instruments. To override them in the name of a reason that claims access to a truer world is not wisdom, but departure from the only honest foundation available.
Kant: Plato in Secular Dress
Section titled “Kant: Plato in Secular Dress”Immanuel Kant (1724–1804) is often presented as the philosopher who rescued both scientific knowledge and moral obligation from the skeptical crisis of the Enlightenment. What he actually did — as Nietzsche saw clearly and stated directly — was reconstruct the Platonic Hinterwelt in secular, rationalist vocabulary, and deliver it to a philosophical tradition that was, in Nietzsche’s withering observation, made up largely of “the sons of preachers and teachers.” (Nietzsche, The Antichrist, §10)
Kant divided reality into two layers. The phenomenal world is the world as we experience it — shaped by the structures of our cognition, not a direct report of reality as it is. Behind it lies the noumenal world — the Ding-an-sich, things as they are in themselves, independent of how they appear to us. Kant’s crucial contention was that this noumenal world is real and underlies the phenomenal world. Kant declared it the true object of metaphysical interest — but it is forever inaccessible to human experience. We know it exists, but we cannot know what it is.
This is the Hinterwelt in philosophical dress. As Nietzsche put it in The Antichrist: “With Kant a back-staircase leading to the old ideal stood open.” The thing-in-itself performs the same structural function as Plato’s Forms or Christianity’s heaven — a beyond-world that is more real than this world, that reduces this world to mere appearance, and toward which genuine philosophical attention must be directed, even if (in Kant’s version) that attention must ultimately confess its own impotence.
But Nietzsche’s most specific and sustained critique of Kant addresses not his metaphysics but his epistemology — and it centers on Kant’s famous Table of Categories. Kant claimed to have discovered a new faculty of human understanding, a set of a priori principles through which the mind structures all experience. Nietzsche’s verdict, stated in Beyond Good and Evil, is that Kant answered the question “how does the mind work?” with “by means of a faculty of the mind” — which is no answer at all. The comparison Nietzsche himself reaches for is a scene from Molière’s comedy Le Malade Imaginaire, in which a physician explains how opium puts people to sleep by appealing to its “dormitive principle” — its sleep-causing property. How does it work? By means of the thing that makes it work. Kant, says Nietzsche, did exactly the same: moved in a circle, rephrased the question as its own answer, and dressed the non-explanation in enough German technical vocabulary that readers lost sight of the comedy. (Nietzsche, Beyond Good and Evil, §11)
Nietzsche’s second charge against Kant is even more damaging: Kant’s philosophical investigation was not a genuine search for truth but a rationalization of a predetermined destination. Kant himself provided the evidence. In the Critique of Pure Reason he spoke of preparing “a firm foundation for those majestic moral edifices” — the moral structures Western tradition had already built. Nietzsche read this as a confession: Kant set out not to discover where philosophy leads but to justify where it had already arrived. He had his conclusion before he had his argument. For Nietzsche, this is the opposite of genuine philosophical inquiry, which is supposed to follow the evidence wherever it goes — not construct a path toward a conclusion already decided.
The moral consequences of this predetermined destination are, from the Epicurean perspective, the most revealing. Kant’s famous categorical imperative — act only on principles you can will to be universal law — bases morality entirely on duty to an abstract rational principle, not on feeling, not on compassion, not on what makes human beings flourish. Nietzsche found this not merely wrong but actively dangerous to life, and rose to the attack:
“A virtue must be our invention; it must spring out of our personal needs and defense. In every other case it is a source of danger… What destroys a man more quickly than to work, think, and feel without inner necessity, without any deep personal desire, without pleasure — as a mere automaton of duty? That is the recipe for decadence, and no less for idiocy. Kant became an idiot.” (Nietzsche, The Antichrist, §11)
But Kant went further still. He argued that an act cannot be morally good if the agent feels pleasure or joy while performing it — because that would mean the motive was at least partly self-interested rather than purely dutiful. Nietzsche found this the most intolerable point of all, because Nietzsche held that joy is not a contaminant of moral action but rather a signal that action is aligned with life and what is actually good for the person performing it. An ethics that treats pleasure as evidence of impure motives has not merely mislocated the source of moral authority — it has declared war on nature’s own instrument for recognizing genuine goods.
Nietzsche’s final verdict was that Kant was a Christian in disguise. (Nietzsche, The Antichrist, §§10–11; Twilight of the Idols, “How the ‘Real World’ at last Became a Myth”) Kant’s “thing-in-itself” is a secular substitute for heaven, and his categorical imperative is the Golden Rule without the authority of God. His postulates of practical reason — God, freedom, and immortality, which he acknowledged could not be proved but declared morally necessary to assume — quietly reinstated the entire supernatural framework his philosophy had seemed to demolish. German theologians recognized this immediately. As Nietzsche noted with irony, they were delighted by Kant — not because he had freed European thought from Christian dogma, but because he had found a new philosophical path back to Christian conclusions. (Nietzsche, The Antichrist, §10)
It is worth noting one point of agreement between Schopenhauer and Nietzsche on Kant: both considered the categorical imperative one of Kant’s greatest mistakes. Schopenhauer was Kant’s most devoted philosophical successor in metaphysics, but he too found it preposterous to derive morality from duty to an abstract rational principle. For Schopenhauer the source of genuine morality was compassion — the innate human recognition of shared suffering. On this narrow point of condemnation of Kant, Schopenhauer and Nietzsche agreed.
Schopenhauer: The World as Will and Suffering
Section titled “Schopenhauer: The World as Will and Suffering”Arthur Schopenhauer (1788–1860) accepted Kant’s division between the phenomenal world and the thing-in-itself. But where Kant had left the noumenal world safely unknowable, Schopenhauer claimed to have identified what it actually is. The thing-in-itself — the underlying reality behind all appearances — is Will: a blind, irrational, insatiable striving that drives all of existence without purpose, without goal, and without the possibility of final satisfaction. (Schopenhauer, The World as Will and Representation, Vol. I, Book II)
Schopenhauer turned his attention away from Kantian idealism to something far darker — he argued that suffering is not an accidental feature of the material world but a metaphysical necessity built into its structure. The argument runs as follows. The Will, existing outside time and space, is undifferentiated — it is one, not many. Multiplicity, the existence of distinct things and persons occupying distinct locations, arises only in the world of representation, the world as we experience it. But this differentiation — you versus me, wolf versus prey, subject versus object — creates conflict where the underlying Will has none. The material world cannot exist without this conflict. Suffering is therefore not something that entered the world through sin or misfortune or bad luck. It is what the world of material representation is, by its very structure. To exist as an individual in the material world is to be a fragment of the Will in conflict with every other fragment. (Schopenhauer, The World as Will and Representation, Vol. I, Book IV)
This leads Schopenhauer to his famous inversion of a saying of Leibniz. Leibniz had argued that we live in the best of all possible worlds. Schopenhauer replied that we live in the worst of all possible worlds — and meant it literally: if the world were even slightly more bearable, the Will would not maintain the necessary conflict and suffering that keeps material existence going at all.
Schopenhauer’s pessimism was different from that of many other Hinterwelt philosophers. For Plato, the material world is a shadow of the real thing — inferior, but not inherently terrible. For Christianity, this world is a preparation for the next — burdensome, but redeemable through grace and hopeful in its ending. For Kant, the phenomenal world is mere appearance — limited in its claims to truth, but not a place of metaphysical horror. But for Schopenhauer, the material world is built on suffering, cannot exist without suffering, and the only honest philosophical response is to face that fact without the consolations any of those other frameworks offered.
At this point it can be acknowledged that Epicurus too held compassion to be important. Both thinkers recognized that unbridled desire generates more pain than satisfaction. Epicurus’s account of desires is not altogether different from Schopenhauer’s condemnation of insatiable Will. Both denounced a social rat race of ambition and status-seeking. Both took suffering seriously as a fact of life. And both understood that what suffering does exist is something that is felt rather than arrived at through pure abstract reason.
But the points of conflict between Epicurus and Schopenhauer are more fundamental than the points of contact.
When Epicurus advises separation from the crowd it is in order to maximize pleasure. Schopenhauer’s withdrawal is in order to deny life under the terms of this world. And where Epicurus concludes that this world contains genuine goods worth pursuing with all the wisdom and energy you possess, Schopenhauer concludes that the only honest response to material existence is progressive mortification of the will-to-live — asceticism.
Schopenhauer’s version of asceticism takes as its models the Buddhist monk, the Christian ascetic, and figures like Jesus, the Buddha, and Saint Francis. These are people who embraced lives of fasting, celibacy, deprivation, and meditation aimed at progressively extinguishing desire. Here — as Nietzsche pointed out — Schopenhauer manages to be more nihilistic than even the religions he was drawing on. (Nietzsche, On the Genealogy of Morals, Third Essay, §§17–28) Christianity’s ascetics at least had heaven to look forward to. Buddhism’s monastics aimed at nirvana. Schopenhauer’s ascetic has neither. He takes the most strenuous self-denial the religious traditions ever required, and strips away the one thing those traditions had going for them: hope. The best outcome available, in Schopenhauer’s philosophy, is a peaceful death having mortified the will as much as possible. There is no redemption. There is only the gradual, deliberate extinguishing of what makes a human being truly alive.
Nietzsche: Arriving from Epicurus’s Direction
Section titled “Nietzsche: Arriving from Epicurus’s Direction”Friedrich Nietzsche (1844–1900) began his philosophical career as one of Schopenhauer’s most devoted admirers. At thirty he wrote: “I belong to those readers of Schopenhauer who know perfectly well, after they have turned the first page, that they will read all the others… The joy of living on this earth is increased by the existence of such a man.” (Nietzsche, Schopenhauer as Educator, §1 — the third of the Untimely Meditations, 1874)
Fifteen years after those words of admiration, Nietzsche wrote: “One should not merely deny life with The World as Will and Representation as Schopenhauer did. One should in the first place deny Schopenhauer.” (Nietzsche, Twilight of the Idols, “Expeditions of an Untimely Man,” §36) And in Ecce Homo he described Schopenhauer’s philosophy as having “the air of a rotting corpse” — adding that no formal refutation was needed, only a good enough sense of smell to recognize that something had gone wrong. (Nietzsche, Ecce Homo, “Why I Write Such Good Books,” §3)
What changed in Nietzsche’s estimation of Schopenhauer? The answer was in Nietzsche’s pursuit of the most fundamental question a philosophy can face: what is the value of life?
Nietzsche held that this question cannot be answered objectively, in the same way by every person. By virtue of being alive, we inherently fail to have the kind of theoretical detached perspective that “objective” judgment would require. A living person cannot be a neutral judge of the value of life — he is a party in the dispute. This means that whether someone assigns a positive or negative value to life is not primarily a matter of abstract philosophical reasoning, but rather a symptom of their underlying psychology — of health or sickness.
When Nietzsche surveyed the Western philosophical tradition he found what he labeled a consensus sapiensium — an almost universal agreement of the great philosophers that life in this material world is not worth much. From this Nietzsche concluded that these so-called giants of the philosophical world were not wise at all. Instead, they were sick people whose sickness had led them to the same destination both in the ancient world and modern times: they had chosen a flight from the real material world into a Hinterwelt that promised something better.
“What does it say about someone when they deny that life has any value?… For a philosopher to see a problem in the value of life is almost an objection against him — a note of interrogation set against his wisdom, a lack of wisdom.” (Nietzsche, Twilight of the Idols, “The Problem of Socrates,” §2)
The disease Nietzsche named for this sickness was decadence: a weakness in confronting the harsh realities of material existence that manifests as the retreat into a beyond-world. The Hinterwelt is not a discovery, but a symptom of decadence. Schopenhauer, in Nietzsche’s diagnosis, was the most extreme case — not merely because he posited a Hinterwelt (as Plato, Christianity, and Kant had all done) but because he went further, and stated directly what the others had only implied: this world is suffering through and through. (Nietzsche, Twilight of the Idols, “Expeditions of an Untimely Man,” §19)
Schopenhauer’s ethics of compassion drew Nietzsche’s attack as well. His argument ran as follows: Schopenhauer grounded compassion in the metaphysical unity of all beings — given that the Will is ultimately one, harming another is harming oneself, and compassion is the natural recognition of this underlying unity.
Nietzsche found this to be not noble but pernicious. Compassion — pity in Nietzsche’s view — preserves what is already ripe for destruction. Pity extends the suffering in the world by keeping alive that which would otherwise perish. It multiplies pain rather than reduces it, and as a foundation for ethics pity makes weakness the central moral value. This changes the focus of human life and places it on suffering, failing, and inability to deal with life’s demands — rather than on vitality, growth, and productive living.
“Pity is the praxis of nihilism… By means of pity, the drain on strength which suffering itself already introduces into the world is multiplied a thousand-fold.” (Nietzsche, The Antichrist, §7)
The end result of the entire Hinterwelt tradition from Socrates and Plato until today was, in Nietzsche’s view, nihilism. Nihilism is the loss of meaning that follows when the myth of the Hinterwelt eventually fades away. Nietzsche’s famous discussion about the death of God is not targeted toward any particular religion or denomination, but at the ultimate notion that there is anything beyond this world. The myth of the beyond-world loses its credibility under the pressure of natural science. But unless we actively seek out and find a replacement, the morality that depended on the existence of a Hinterwelt remains in place, only without foundation or force of allegiance. The result is that the modern world has retained the ideal of self-denial, guilt, and devaluation of this life, along with the compassion-based ethics that accompany it in modern Humanism. The spiritual crisis that people recognize is that without belief in a heaven or a nirvana that once gave those things meaning, nothing remains but emptiness. That emptiness is nihilism — not a dramatic proclamation of meaninglessness, but the slow collapse of a value-system whose supports have rotted away.
This is why Nietzsche’s attack on Schopenhauer is not simply a philosophical disagreement about the value of pessimism. It is an attempt to prevent the worst outcome: a civilization that has lost God but kept His morality, and become nothing more than a shadow.
When Nietzsche looks for a philosophical tradition that got this right from the beginning — that refused the Hinterwelt, trusted the natural feelings as genuine guides, and affirmed this world as the only world — he finds Epicurus. The awakening sciences have allied themselves point by point with Epicurus, he wrote, while point by point rejecting the tradition that runs from Plato through Paul through Kant and Schopenhauer. As Nietzsche stated in The Antichrist, Epicurus would have won, had Paul not arrived. (Nietzsche, The Antichrist, §58)
Where Nietzsche and Epicurus Part Ways
Section titled “Where Nietzsche and Epicurus Part Ways”It is important to see where and why Nietzsche diverged from Epicurus on certain points.
Nietzsche focuses much more on struggle than does Epicurus. Nietzsche focuses on the self-overcoming that results from resistance met and defeated. Epicurus focuses on community and cooperative living among like-minded friends. Nietzsche does not attempt to redefine pleasure and is often suspicious of comfort and ease, while Epicurus treated pleasure much more broadly and emphasized that all desirable mental and bodily activities fall under the domain of “pleasure” rather than “power.”
Unlike Epicurus, Nietzsche made no effort to define happiness in terms of pleasure. When Nietzsche held that happiness is “the feeling that power is growing, that a resistance is overcome” (Nietzsche, The Antichrist, §2) — he is using a different vocabulary entirely. Epicurean happiness is defined in terms that reflect his division of the universe into matter and void: happiness to Epicurus is a predominance of pleasures over pains across the full range of life.
There are significant differences in vocabulary and emphasis, but within a shared fundamental commitment: that this world is the real world, that this life is the life that matters, and that any philosophy that commands the subordination or denial of the feelings of this world has abandoned the only honest foundation available.
Nietzsche’s dissection of the Hinterwelt myth, his identification of decadence as life-denial in philosophical clothing, his recognition that Kant and Schopenhauer were doing what Plato had done — all of this illuminates Epicurus’s views even where not stated in Epicurean terms.
A Comparison Table
Section titled “A Comparison Table”The table below presents the major positions of all four philosophers across the questions that most clearly divide them. It is a framework for comparison, not an exhaustive account of any single thinker’s position.
| Epicurus | Kant | Schopenhauer | Nietzsche | |
|---|---|---|---|---|
| Is this world the real world? | Yes — material bodies and void; nothing supernatural; this world, fully known by sensation, is all there is | The phenomenal world is real but mediated by our cognition; the noumenal world (thing-in-itself) is more fundamental but unknowable | The phenomenal world is the Will’s expression; the Will is the real thing-in-itself; suffering is built into the world’s structure | Yes, absolutely — the alleged “true world” and all its variants (Hinterwelten) are philosophical fictions; this is the only world |
| Value and assessment of this life | Life is good; genuine happiness is available to anyone who pursues genuine goods with wisdom | Life has dignity but happiness is not the moral goal; duty is the measure | Life is metaphysically built on suffering; it cannot exist without suffering; we live in the worst of all possible worlds | Life is to be affirmed completely — amor fati; life-denial is the great philosophical disease of the West |
| The alleged Hinterwelt (beyond-world) | Explicitly rejected from the first — there is no world beyond material bodies and void | Reconstructed as the noumenal realm — the world as it is behind experience, real but unknowable | Reconstructed as the Will — the undifferentiated metaphysical substrate of reality, the dark irrational force beneath all appearances | Traced from Plato through Kant and Schopenhauer and rejected entire — the Hinterwelt is a symptom of decadence, not a discovery |
| Basis of ethics and value | The natural feelings of pleasure and pain — nature’s own instruments for guiding creatures toward genuine goods | Pure practical reason — duty, the categorical imperative, entirely independent of feeling and inclination | Compassion arising from the metaphysical unity of all beings beneath the surface of differentiation | Will to power — the full engagement of a living creature with its actual existence; life-affirmation, growth, self-overcoming |
| Role of pleasure and natural feeling | The natural guide to genuine goods; the goal of life is pleasure across its full range — physical, social, intellectual | Morally disqualifying — acting from inclination or joy has no moral worth; genuine moral action requires the suppression of feeling in favor of duty | Momentary relief from insatiable striving; ultimately part of the problem, since desire perpetuates suffering | Feeling and instinct are more trustworthy than abstract rationalism; joy is a positive signal, not a contaminant of moral action |
| Pleasure excluded from morality? | No — pleasure is the goal and the standard | Yes — explicitly; if you feel joy while following the categorical imperative, your motive is impure; Kant called this dangerous | Partially — compassion, not pleasure, is the ethical foundation; personal pleasure is an expression of ego which his metaphysics condemns | Strongly no — Nietzsche attacked Kant specifically for this: “What destroys a man more quickly than to work, think, and feel without pleasure — as a mere automaton of duty?” |
| The role of reason | An essential tool, but always dependent on and checked by sensation and feeling; no faculty of pure reason exists above experience | Supreme — pure practical reason commands morality from above all natural inclination | Recognizes the limits of reason; the Will (irrational) is more fundamental; but reason still operates within his system | Reason divorced from life and instinct is itself a symptom of decadence; “Kant became an idiot” |
| Suffering and pain | Real and to be minimized wherever possible; the honest calculation sometimes accepts lesser pain for greater pleasure — this is prudence, not self-denial | Irrelevant to moral worth; what matters is whether one acts from duty regardless of suffering or happiness | Metaphysically necessary — suffering is built into the structure of material existence; the world cannot exist without it | Real and not to be evaded; but the response should be affirmation and overcoming, not pity, denial, or asceticism |
| Asceticism | Rejected as a goal — withdrawal is in order to enjoy genuine goods, not to deny them; the garden is a place of pleasure | Implicit — duty requires the systematic suppression of natural inclination; moral worth depends on overriding what feels good | Explicitly advocated as the highest path — the progressive mortification of the will-to-live; but unlike Buddhism or Christianity, with no hope of heaven or nirvana at the end | Attacked as the “ascetic ideal” — the will to nothingness, nihilism in philosophical clothing; Nietzsche devoted a third of Genealogy of Morals to its dissection |
| Compassion / pity as ethics | Not the basis of ethics — friendship in Epicurus is grounded in shared pleasure, not shared suffering; the Epicurean community is built on genuine enjoyment, not pity | Rejected — compassion is too personal and feeling-based; moral action must be based on duty, not emotion | Central — the foundation of all genuine ethics; morally right action flows from recognition of our shared suffering beneath the surface of individual existence | Attacked as “the praxis of nihilism” — pity preserves what is ripe for destruction, multiplies suffering, glorifies weakness |
| Death | Nothing to fear — the end of sensation, not a transition to judgment; “death is nothing to us” | A problem that practical reason requires to be resolved: immortality is a postulate of moral theology, necessary to assume even if unprovable | Not the worst thing — potentially a liberation from the Will; Schopenhauer is relatively serene about personal extinction | Accept mortality fully; the eternal recurrence is Nietzsche’s way of demanding that we say yes to life without the consolation of an afterlife |
| The supernatural / God | The gods, if they exist, do not intervene in human affairs; no divine creation, no divine judgment, no divine reward | God is a postulate of practical reason — not demonstrable, but morally necessary to assume; Kant reintroduced God through the back door of practical reason | No personal God; the Will is the impersonal metaphysical substrate; Schopenhauer admired Buddhism for its non-theism | God is dead — but the danger is that we will keep God’s morality while losing God, producing nihilism; “we have still to overcome his shadow” |
| Relationship to Plato and Socrates | Direct and declared opponent — Epicurus rejected the Platonic project at every level | Inheritor — perpetuates the Platonic division between sensory appearance and alleged genuine reality in secular, rationalist form | Inheritor — extends Kant’s phenomenal/noumenal division, filling the noumenal with the Will; the alleged Hinterwelt in its darkest form | Attacker — traces the alleged Hinterwelt from Plato through Socrates through Kant and Schopenhauer and devotes his career to its demolition |
| Endpoint if the philosophy is followed | A life well lived — friendship, genuine pleasures, freedom from groundless fear, full engagement with the goods this world actually contains | Moral seriousness, acting from duty regardless of personal happiness — and ultimately a system that requires God and immortality to cohere | Compassion, resignation, progressive mortification of the will-to-live, a peaceful death — with no hope of heaven or nirvana | Amor fati, self-overcoming, the affirmation of life in all its difficulty — and the avoidance of nihilism |
| Overall life stance | Life is worth living; nature is sufficient; genuine happiness is available to those who pursue it with wisdom; “gratitude is due to blessed Nature” | Life has worth, but its worth lies in moral seriousness, not in happiness; the feelings nature provides are obstacles to genuine moral action | Life is not worth living without radical transformation; the honest response to existence is to want less and less of it | Life is worth affirming completely, including its suffering — and the failure to affirm it is the philosophical disease of two thousand years |