Philosophy's rebellion against pure thought illustrated with symbolic elements from Herbart, Schopenhauer, and process theology

When Philosophy Turned Against Itself: The Great Rebellio...

Updated: April 2026

When Philosophy Turned Against Itself: Quick Answer

The 19th-century rebellion against rationalism began when Hegel's grand system - which promised to contain all reality within pure logical categories - collapsed under internal and external pressure. Schopenhauer countered with the irrational Will; Kierkegaard with the irreducibly individual leap; Marx with material conditions over ideas; Nietzsche with the life-denying impulse behind Western metaphysics. The 20th century deepened the crisis: phenomenology exposed the unreflected lived experience beneath epistemology; existentialism placed radical individual freedom where rational essence had stood; Wittgenstein dissolved philosophical problems rather than solving them. From a spiritual perspective, this self-undermining movement represents thinking arriving at the threshold of what thought cannot contain.

Last updated: March 15, 2026

Key Takeaways

  • The rebellion against rationalism began with the internal collapse of Hegel's system and the external crisis of the failed 1848 revolutions.
  • Schopenhauer's irrational Will, Kierkegaard's individual leap, and Marx's material inversion each attacked the rationalist premise from a different direction.
  • Nietzsche identified the entire Western metaphysical tradition - from Plato through Christianity - as a symptom of life-denial masquerading as higher truth.
  • Wittgenstein's two philosophies both concluded, through different routes, that traditional philosophical problems dissolve when the misuse of language is identified.
  • From a spiritual perspective, philosophy's self-undermining movement may represent the mind arriving at the limit of what conceptual thought can contain.

The Collapse of Hegel's System

Georg Wilhelm Friedrich Hegel (1770-1831) produced what remains one of the most ambitious intellectual projects in human history: a philosophical system that claimed to comprehend the entire development of nature, human history, art, religion, and philosophy within a single rational framework. The Phenomenology of Spirit (1807) traced consciousness through its successive shapes from simple sense-certainty to absolute knowing. The Science of Logic (1812-1816) derived the categories of thought and being from the self-movement of pure logical necessity. The Philosophy of Right (1820) grounded political theory in rational spirit. The Lectures on the History of Philosophy, Aesthetics, and the Philosophy of Religion wove art, spirituality, and intellectual history into a single narrative of Spirit's self-recognition through the diversity of human cultures.

The system's ambition was inseparable from its method. Hegel's dialectic - the movement of thought through contradiction (thesis, antithesis) toward a richer synthesis that preserved what was true in both sides - claimed to show how any apparently fixed and opposed categories (being/nothing, freedom/necessity, individual/universal) were not merely opposed but required each other and resolved into a higher unity. Nothing was outside the system because the very act of opposing anything to it was itself a moment within it.

This total claim was also total vulnerability. If the system failed to comprehend even one genuine aspect of reality - if something existed that could not be brought within the dialectical movement - then the entire project collapsed. And the critics who arose within a decade of Hegel's death (1831) identified precisely such moments of genuine resistance. The failures of 1848, when the rational progress of history failed to deliver the political freedoms that Hegel's system had promised were immanent in modernity, devastated the credibility of the rational-historical narrative. The persistence of grinding poverty amid industrial progress, the continuation of arbitrary political power, and the massive gap between Hegel's system and the conditions of actual lived human life created the conditions for a fundamental re-evaluation.

Schopenhauer: The Irrational Will

Arthur Schopenhauer (1788-1860) had completed The World as Will and Representation in 1818, more than a decade before Hegel's death, but the book's reception was initially buried beneath the flood of Hegel's popularity. It was only in the second half of the 19th century, as Hegel's star dimmed, that Schopenhauer's star rose.

Schopenhauer's fundamental move was to accept Kant's distinction between phenomena (the world as it appears to consciousness) and the thing-in-itself (reality as it is independently of consciousness) while rejecting Kant's agnosticism about the thing-in-itself. We have one privileged access to reality beyond representation, Schopenhauer argued: our own bodily experience. When I act, I am not merely observing my body from outside; I am identical with it in a way that is not merely representational. And what I find in this direct self-experience is not rational will or moral freedom but something darker: a blind, striving force that seeks without goal and achieves without satisfaction.

This is the Will (Wille) - and it is, Schopenhauer argued, the same force that moves all of nature. Gravity, magnetism, the growth of plants, the sexual drive, the striving of nations and individuals - all are manifestations of the same groundless, purposeless Will expressing itself through the diversity of phenomenal forms. The world is not, as Leibniz had claimed, the best of all possible worlds, nor is it, as Hegel claimed, the rational development of Spirit toward self-comprehension. It is the incoherent, self-thwarting expression of a blind force that cannot rest and cannot be satisfied.

Schopenhauer's solution - temporary aesthetic contemplation and permanent ethical denial of the will through asceticism, compassion, and ultimately the mystical extinction of individual will - drew explicitly on Buddhist and Hindu sources, making his philosophy a landmark in the Western encounter with Eastern wisdom traditions. His influence reached Nietzsche, Wagner, Freud, and a century of artists and writers who found in his pessimism an honest confrontation with experience that rationalism had evaded.

Kierkegaard: The Individual Leap

Soren Kierkegaard (1813-1855) attacked Hegel from a different direction. The problem was not that Hegel's system was pessimistic but that it was abstract - it comprehended everything except the one thing that actually mattered: the existing individual standing before the decisive choices of their own life.

Kierkegaard's authorship is deliberately indirect - written under multiple pseudonyms from different philosophical standpoints - because he believed that existential truths cannot be communicated directly. Direct communication conveys information; existential truth must be appropriated through the reader's own subjective engagement. The task is not to provide conclusions but to create conditions in which the reader cannot evade the decisions their own existence demands.

The stages of existence that Kierkegaard's pseudonymous works explore - the aesthetic (living for pleasure and novelty, evading commitment), the ethical (living under universal moral law, accepting duty and responsibility), and the religious (the individual's direct and paradoxical relationship to God, transcending universal ethics through the "teleological suspension of the ethical") - are not a rational hierarchy but genuine existential possibilities, each with its own logic, each requiring a leap to enter rather than a rational derivation.

The leap is Kierkegaard's most distinctive and influential concept. It described any moment in which the rational weighing of evidence gives way to a personal commitment that exceeds what the evidence warrants. This applies in its most dramatic form to the religious leap - committing to a God who entered history as a particular individual, which is "objectively uncertain" and therefore requires the maximum "inwardness" or subjective passion. But the concept of the leap has broader existentialist resonance: every authentic choice involves committing to a possibility rather than a certainty, and the anxiety of this commitment is not a failure of rationality but the condition of genuine existence.

Feuerbach and Marx: The Material Turn

Ludwig Feuerbach (1804-1872) produced the most direct inversion of Hegel's idealism in his Essence of Christianity (1841). Hegel had seen religion as a representational anticipation of the philosophical truth that finite spirit is identical with infinite spirit - God and humanity are ultimately one in the Absolute. Feuerbach inverted this: religion is not a preliminary form of philosophical truth but a projection of human essence onto an imaginary divine being. The qualities that humans attribute to God - infinite love, absolute wisdom, perfect goodness - are the alienated qualities of humanity itself, projected outward and worshipped as external rather than owned as human potential.

The practical consequence was clear: rather than worshipping God, humans should recognise their own projected essence and work to actualise it in human community. The love, wisdom, and solidarity attributed to God are human capacities awaiting social conditions in which they can be fully expressed.

Karl Marx (1818-1883) took Feuerbach's inversion of Hegel and deepened it. Feuerbach had inverted the idealist relationship of thought and being but had stopped at the level of ideas - he had shown that religion reflected human essence but had not asked what human essence reflected. Marx's answer was that both religion and philosophy reflect material conditions - specifically the economic structures of production and the class relations built on them. Religion is the "sigh of the oppressed creature, the heart of a heartless world" - an ideological response to real suffering that simultaneously expresses that suffering and helps sustain the conditions that produce it by directing hope toward a transcendent rather than immanent resolution.

The eleventh of Marx's Theses on Feuerbach (1845) formulated the new orientation definitively: "The philosophers have only interpreted the world, in various ways. The point is to change it." This was not a rejection of thought but a demand for a different relationship between theory and practice - one in which philosophical analysis serves concrete historical transformation rather than providing an abstract picture of a reality that remains unchanged by the analysis.

Nietzsche: Against All Idealism

Friedrich Nietzsche (1844-1900) is both the culmination of the 19th-century rebellion against rationalism and its most searching internal critic. He was deeply influenced by Schopenhauer and initially by Wagner, and his early work (The Birth of Tragedy, 1872) adopted Schopenhauer's Will as its underlying framework while celebrating the Dionysian forces in Greek tragedy as a counterweight to Apollonian rationalism. But Nietzsche's mature philosophy moves beyond Schopenhauer's pessimism by refusing its Buddhist solution.

The core of Nietzsche's mature critique is what he called the genealogy of morals - not the question "what is the value of these moral values?" but the deeper question "under what conditions were these values created, and what do those conditions reveal about the values themselves?" His Genealogy of Morality (1887) argued that Christian-Platonic morality - with its emphasis on pity, humility, self-denial, and the devaluation of instinct and body - arose from what he called ressentiment: the resentment of the powerless against the powerful, which inverted the natural relationship between strong and weak by declaring strength sinful and weakness virtuous.

The diagnosis of nihilism was central to Nietzsche's project. Nihilism did not mean the obvious position that nothing has value; it meant the more insidious condition in which the highest values (God, Truth, Moral Law) have been revealed to have no transcendent foundation - "God is dead" - but the psychological and cultural structures built on those values persist after their foundation has collapsed. This is the most dangerous form: a culture still organised around values it no longer genuinely believes in, producing what Nietzsche called "the last man" - a creature of comfortable mediocrity who has lost the capacity for creation, risk, and genuine affirmation.

Nietzsche's responses - the will to power as self-overcoming, the eternal recurrence as a test of amor fati, the Ubermensch as a figure who creates values rather than inheriting them - are not doctrines but provocations: invitations to a more honest and creative relationship with existence than either theistic moralism or secular rationalism had provided.

Husserl and Phenomenology

Edmund Husserl (1859-1938) approached philosophy's crisis from a very different direction. His concern was not with the cultural consequences of rationalism's failure but with its epistemological foundations - he wanted to rescue philosophy by giving it truly rigorous foundations more secure than either empiricism or rationalism had provided.

The phenomenological method began with the epoché - the "bracketing" or suspension of all prior theoretical commitments, including the "natural attitude" (the unreflected assumption that the world simply exists as ordinary experience presents it). With all such commitments suspended, what remains is pure experience as it appears in consciousness - not the physical world but the phenomenon (the appearance to consciousness). Phenomenology describes the essential structures of this pure consciousness: intentionality (the directedness of consciousness toward objects), temporality (the complex structure of time-consciousness with its retention of the just-past and protention of the about-to-come), intersubjectivity (the constitution of the other as other), and the many modalities of experience from perception to imagination to memory.

What phenomenology disclosed was that the Cartesian epistemological starting point - a disembodied subject confronting an external world and asking how it can know that world - was itself derived from a more fundamental level of experience that philosophy had unreflectingly taken for granted: the lived experience of being already engaged in a world, with a body, with others, in a historical situation. Heidegger's Being and Time (1927) extended this disclosure into an ontology of Dasein - human existence as being-in-the-world, already thrown into a situation, projecting forward toward possibilities, finding things meaningful before and below the level of any theoretical attitude.

Existentialism

Existentialism is less a school of thought than a family resemblance among 20th-century thinkers who placed concrete individual existence - with its freedom, anxiety, responsibility, and finitude - at the centre of philosophical inquiry. The term was resisted by several of the thinkers most associated with it (Heidegger denied being an existentialist; Sartre initially accepted the label then complicated it).

Jean-Paul Sartre's formulation "existence precedes essence" captures the tradition's fundamental inversion of classical metaphysics. For Aristotle and his successors, things have a determinate essence - a nature or form that defines what they are before and independently of their existence. The human being, in this classical view, has a nature (rational animal, image of God) that defines what it is to flourish as a human being. Sartre's counter-claim is that for human beings, existence comes first: we exist before we have any determinate nature, and we create what we are through our free choices. There is no human essence waiting to be fulfilled, no pre-given purpose to be discovered. We are "condemned to be free."

Albert Camus developed the concept of the absurd as the defining condition of human existence: the confrontation between the human need for clarity, meaning, and purpose and the world's radical silence on these demands. The absurd is not in the world alone or in human consciousness alone but in the relationship between them - the demand that the world not generated. The correct response to this absurd condition, Camus argued in The Myth of Sisyphus (1942), is neither suicide nor the philosophical "leap" to faith (which he accused Kierkegaard and others of as a form of evasion) but rebellion: the full acceptance of the absurd condition combined with the affirmation of life within it. We must imagine Sisyphus happy.

Wittgenstein: The Dissolution

Ludwig Wittgenstein (1889-1951) produced two radically different philosophies separated by a twenty-year crisis of thought, but both converged on a similar therapeutic conclusion: traditional philosophical problems arise from misuse of language, and the philosopher's task is dissolution rather than solution.

The Tractatus Logico-Philosophicus (1921) drew a strict boundary around what language can say. A meaningful proposition pictures a possible state of affairs in the world. When philosophy attempts to say things about the logical form of propositions, the nature of the self, the conditions of possibility of experience, or the meaning of life and death, it crosses this boundary into nonsense - not harmful nonsense but the show of what cannot be said. The Tractatus itself, by this standard, is ladder-nonsense: its propositions must be recognised as nonsensical once they have been used to reach the viewpoint from which one can see why they are nonsensical. Then the ladder is kicked away and one is left in silence before what matters most.

The Philosophical Investigations (1953) abandoned the Tractatus's picture theory of meaning but retained the therapeutic ambition. Meaning is not a matter of pictures but of use in a form of life. When philosophers take ordinary words like "know," "mean," "understand," "think," and use them in abstracted, idealised ways divorced from their ordinary contexts, they generate philosophical problems - the mind-body problem, the problem of other minds, the problem of induction - that are not discoveries of genuine depths but confusions created by language "going on holiday." The method of the Investigations is not argument but the patient accumulation of reminders about how language actually works, gradually releasing the hold of philosophical pictures that have bewitched the philosopher's intelligence.

The Postmodern Turn

The philosophical movements of the late 20th century - poststructuralism, deconstruction, and what Jean-François Lyotard in 1979 called the "postmodern condition" - can be understood as a further radicalisation of the rebellion against rationalism. They share the 19th-century critics' suspicion of grand systematic claims but extend it into a thoroughgoing scepticism about the possibility of any stable, universal foundation for knowledge, ethics, or meaning.

Jacques Derrida's (1930-2004) deconstruction showed that the fundamental binary oppositions structuring Western thought (presence/absence, speech/writing, nature/culture, interior/exterior) are not natural or neutral but carry ideological weights that privilege one term over another. More importantly, close reading reveals that these apparently stable oppositions are internally unstable: the privileged term depends on, is contaminated by, and cannot be clearly separated from the supposedly inferior term it excludes. The result is not a new stable alternative position but a permanent undecidability that no final interpretation can overcome.

Michel Foucault (1926-1984) extended Marx's and Nietzsche's genealogical method to show how modern knowledge formations - medicine, psychiatry, criminology, sexology - are inextricable from power relations. What counts as knowledge is determined by institutional structures of authority, and those structures always advantage some perspectives and exclude others. Knowledge is not a neutral accumulation of verified truths but a contested domain shaped by power throughout.

Spiritual Significance of Philosophy's Self-Questioning

The movement traced in this article - from confident rational system-building to the dissolution of systems, from Hegel's absolute knowledge to Wittgenstein's silence, from metaphysical foundations to their perpetual undermining - has a spiritual resonance that practitioners of contemplative traditions have noted.

The mystical traditions of virtually every culture have insisted that ultimate reality cannot be captured in propositional form. Meister Eckhart's negative theology approached God through the systematic negation of all predicates (God is not good, not wise, not being - not because God lacks these qualities but because God exceeds them so completely that the terms become misleading). Nagarjuna's Madhyamaka philosophy in the Buddhist tradition applied rigorous logical analysis to every philosophical position - including Buddhist positions - showing that none could withstand scrutiny, and concluded that the correct view was no view: sunyata (emptiness) is not a positive metaphysical claim but the recognition that no fixed perspective can capture reality.

The Zen tradition developed koans - paradoxical questions and statements - specifically to exhaust the conceptual mind's attempts to solve philosophical problems through analytical thinking. The koan's purpose is not to produce a correct answer but to drive the practitioner to the limit of what conceptual thought can do, so that when thought reaches that limit and falls silent, something else can emerge.

From this perspective, the history of Western philosophy's self-undermining - its successive discovery that each apparently secure foundation is itself in need of grounding, that every rational system contains the resources of its own critique - may represent something more than mere intellectual failure. It may represent the thinking mind approaching, through its own rigour and honesty, the same threshold that contemplative traditions have deliberately cultivated: the recognition that what matters most lies beyond what thought can contain, and that silence - the Tractatus's silence before what shows itself, Heidegger's listening to Being, the mystic's via negativa - is not the absence of meaning but its necessary form.

Frequently Asked Questions

Why did 19th-century philosophy rebel against rationalism?

The rebellion against Enlightenment rationalism developed from several convergent pressures. Hegel's grand rational system had promised to reconcile all contradictions and ground all knowledge in absolute reason. When that system collapsed under internal criticism and the failed revolutions of 1848, the disillusionment was total. Schopenhauer offered a counter-vision of reality as blind Will rather than rational Spirit. Nietzsche diagnosed the entire rational tradition as a symptom of life's weakness. The rebellion was not merely intellectual but existential - a response to the felt failure of reason to deliver on its promises of meaning and liberation.

What is Schopenhauer's Will and why does it challenge rationalism?

Arthur Schopenhauer proposed in The World as Will and Representation (1818) that reality has two aspects: the world as representation (phenomenal appearances) and the world as Will (the underlying reality revealed in direct bodily experience). The Will is blind, purposeless, and insatiable - it strives without goal and achieves without satisfaction. This inverted Hegel's rational Geist: instead of rational purpose unfolding through history, Schopenhauer saw irrational compulsion in everything from gravity to human ambition. If the deepest layer of reality is irrational Will, then rational thought is not the ground of existence but a surface phenomenon produced by groundless striving.

What did Kierkegaard mean by the leap of faith?

Soren Kierkegaard (1813-1855) argued that the most important decisions in human life cannot be reached through rational argument but require a leap: a subjective commitment that goes beyond evidence and stakes everything on passionate choice. For Kierkegaard, Hegel's attempt to comprehend all reality within a rational system was a category error: existence is always concrete, individual, passionate, and temporal. The leap of faith in its religious form meant committing to an absurd proposition in full awareness of its rational absurdity, because that absurdity is precisely what demands genuine faith rather than rational acceptance.

What is Nietzsche's critique of Western philosophy and morality?

Friedrich Nietzsche (1844-1900) argued that Western philosophy from Socrates onward was driven by a hidden life-denying impulse: the will to find a fixed, eternal truth behind the flux of becoming, because actual life with its suffering and mortality was too difficult to endure. The Christian-Platonic tradition projected an ideal world to devalue the actual world. Nietzsche called this nihilism in its most pernicious form: the nihilism that denies life's value while pretending to affirm higher values. His counter-proposals - amor fati, eternal recurrence, will to power as self-overcoming - attempted a philosophy that affirmed life completely rather than escaping it.

What is the difference between Marxist and idealist philosophy?

Karl Marx famously said he had 'stood Hegel on his head.' For Hegel, the driving force of history was the dialectical self-movement of Geist (Spirit) working through material conditions. For Marx, this was an inversion of reality: it is material conditions - specifically economic structures and class relations - that drive historical development, and ideas including philosophy are products of these material conditions. This 'materialist inversion' had radical practical consequences: changing ideas is insufficient; changing material conditions through political and economic action is what matters. Philosophy had perpetually interpreted the world; the point was to change it.

What is existentialism and how did it emerge from the rebellion against rationalism?

Existentialism places individual existence, freedom, and responsibility at the centre of philosophical inquiry. Its fundamental insight - 'existence precedes essence' in Sartre's formulation - means that human beings have no predetermined nature or purpose; we create ourselves through our choices. This emerged from the collapse of the rationalist framework: if there is no Hegelian Geist, no Platonic essences, no God defining human purpose, then the individual confronts existence in its naked contingency with total freedom and total responsibility. The existentialist themes of anxiety, absurdity, authenticity, and bad faith are responses to this condition.

What is Wittgenstein's critique of traditional philosophy?

Ludwig Wittgenstein (1889-1951) produced two philosophies that both concluded traditional philosophical problems are generated by misuse of language. In the Tractatus (1921), language can only picture facts; propositions about ethics, the self, or the meaning of life cannot say anything and must end in silence. In the Philosophical Investigations (1953), philosophical problems arise when language 'goes on holiday' - when ordinary words are pulled from their natural contexts. Philosophy's task is not to solve these problems but to dissolve them by returning to ordinary language use.

What is phenomenology and how does it challenge traditional epistemology?

Phenomenology, founded by Edmund Husserl (1859-1938), begins from careful description of experience as it appears in consciousness, suspending all prior theoretical commitments. The challenge to traditional epistemology is that it assumes a Cartesian picture of a disembodied mind trying to reach an external reality. Phenomenology shows this picture is itself derived from a more fundamental lived experience of being already in the world. Heidegger's Being and Time (1927) extended this into an ontology of Dasein - human existence as being-in-the-world, thrown into a situation, already engaged with things as meaningful before any theoretical attitude.

What is postmodern philosophy and its relationship to the earlier rebellion?

Postmodern philosophy - associated with Derrida, Foucault, Lyotard, and Baudrillard - radicalised the rebellion against rationalism. Where Nietzsche attacked life-denying impulses behind Western metaphysics, Derrida's deconstruction showed that the binary oppositions structuring Western thought are internally unstable. Where Marx showed ideas reflect material interests, Foucault showed every knowledge claim is embedded in power relations. Lyotard's diagnosis of the postmodern condition as 'incredulity toward metanarratives' describes the endpoint of a process that began when Hegel's grand narrative first began to fracture.

What is the spiritual significance of philosophy's self-questioning?

Philosophy's repeated turn against itself - rationalism undermining its own foundations, logic discovering its own incompleteness (Gödel, 1931), language analysis dissolving philosophical problems - can be read as the mind approaching the limits of its own self-sufficiency. Meister Eckhart's negative theology, Nagarjuna's Madhyamaka deconstruction, and Zen koans all approach the same threshold from the contemplative side. Philosophy's self-undermining movement - from confident system-building to Wittgenstein's silence, from Hegel's absolute knowledge to Kierkegaard's passionate individual leap - may represent thinking arriving, through its own rigour, at what thought cannot contain.

Sources

  1. Hegel, G. W. F. (1807). Phenomenology of Spirit (A. V. Miller, Trans., 1977). Oxford University Press.
  2. Nietzsche, F. (1887). On the Genealogy of Morality (C. Diethe, Trans., 1994). Cambridge University Press.
  3. Kierkegaard, S. (1844). The Concept of Anxiety (R. Thomte, Trans., 1980). Princeton University Press.
  4. Wittgenstein, L. (1953). Philosophical Investigations (G. E. M. Anscombe, Trans.). Blackwell.
  5. Heidegger, M. (1927). Being and Time (J. Macquarrie & E. Robinson, Trans., 1962). Harper & Row.
  6. Schopenhauer, A. (1818). The World as Will and Representation (E. F. J. Payne, Trans., 1958). Dover Publications.
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