25 Søren Kierkegaard Quotes on Existence, Anxiety, and the Leap of Faith
Soren Kierkegaard (1813-1855) was a Danish philosopher, theologian, and prolific author who is widely regarded as the first existentialist. Deeply influenced by his father's intense religiosity and haunted by family tragedies -- five of his seven siblings died before him -- Kierkegaard produced an extraordinary body of work in just over a decade, writing under numerous pseudonyms to present conflicting philosophical viewpoints. He died at 42 after collapsing on a Copenhagen street, having spent his final years in a fierce public battle against the established Danish Church.
In September 1841, Kierkegaard returned his engagement ring to Regine Olsen, breaking off the relationship despite being deeply in love with her. He believed that his melancholic temperament and his calling as a writer made marriage impossible, and he spent years tormenting himself over the decision. The anguish of this renunciation became the engine of his philosophical creativity. In the next three years alone, he published Either/Or, Fear and Trembling, Repetition, The Concept of Anxiety, and Philosophical Fragments -- works that explored the agonizing freedom of human choice with unprecedented psychological depth. As he wrote: "Anxiety is the dizziness of freedom." That compact insight -- that the very possibilities that make us free also fill us with dread -- anticipated Freudian psychology by half a century and became one of the foundational concepts of existentialism.
Who Was Soren Kierkegaard?
| Item | Details |
|---|---|
| Born | 5 May 1813, Copenhagen, Denmark |
| Died | 11 November 1855 (aged 42), Copenhagen, Denmark |
| Nationality | Danish |
| Occupation | Philosopher, Theologian, Writer |
| Known For | Father of existentialism, "Either/Or," Leap of faith |
Key Achievements and Episodes
The Broken Engagement That Inspired a Philosophy
In 1841, Kierkegaard broke off his engagement to Regine Olsen, the love of his life, believing that his melancholy temperament and religious calling made marriage impossible. The anguish of this decision pervaded his entire philosophical output. His exploration of the anxiety, dread, and radical freedom involved in making irreversible life choices became the foundation of existentialism, influencing thinkers from Heidegger to Sartre.
Writing Under Pseudonyms
Kierkegaard published many of his most important works under elaborate pseudonyms, each representing a different philosophical perspective. "Either/Or" (1843) presented the aesthetic and ethical ways of life through two fictional authors. "Fear and Trembling" examined Abraham's sacrifice through the pseudonym Johannes de Silentio. This technique allowed him to explore contradictory viewpoints without claiming any single position as his own definitive answer.
The Attack on Christendom
In the final year of his life, Kierkegaard launched a fierce public attack on the Danish State Church, arguing that institutional Christianity had become the very opposite of what Christ intended. He published a series of pamphlets called "The Moment" arguing that comfortable, respectable Christianity was a betrayal of the radical demands of genuine faith. He collapsed on a street in Copenhagen in October 1855 and died six weeks later at age 42.
Who Was Søren Kierkegaard?
Søren Aabye Kierkegaard was born on May 5, 1813, in Copenhagen, Denmark, the youngest of seven children in a prosperous but deeply melancholic family. His father, Michael Pedersen Kierkegaard, was a retired wool merchant haunted by guilt over what he believed was a curse on the family — five of his seven children died before the age of thirty-four. This atmosphere of religious dread and death shaped Søren profoundly. He enrolled at the University of Copenhagen in 1830 to study theology at his father's insistence, but he drifted through years of philosophy, literature, and what he later called his "great earthquake" — a period of dissipation and spiritual crisis. After his father's death in 1838, Kierkegaard rededicated himself to his studies, completed his theology degree, and defended his doctoral dissertation, On the Concept of Irony, in 1841.
The pivotal event in Kierkegaard's personal life was his engagement to Regine Olsen in 1840 and his agonizing decision to break it off the following year. He loved Regine deeply but believed that his melancholy temperament and his calling as a writer made marriage impossible. The pain of this renunciation haunted him for the rest of his life and became a recurring theme in his works. In 1843, he published two of his greatest books on the same day: Either/Or, a massive two-volume work presenting the aesthetic and ethical ways of life through the voices of fictional characters, and Fear and Trembling, a meditation on the story of Abraham and Isaac that explored what it means to make a leap of faith beyond the reach of reason and universal ethics.
Over the next decade, Kierkegaard produced an extraordinary body of work at astonishing speed, writing under pseudonyms such as Johannes Climacus, Anti-Climacus, Johannes de Silentio, and Victor Eremita. Each pseudonym represented a different existential standpoint, allowing Kierkegaard to explore ideas without claiming final authority over them. His major works included The Concept of Anxiety (1844), which analyzed anxiety as the dizziness of freedom; Stages on Life's Way (1845); Concluding Unscientific Postscript (1846), his most sustained attack on Hegelian philosophy; and The Sickness Unto Death (1849), which defined despair as the failure to become a true self. Alongside the pseudonymous works, he wrote devotional discourses under his own name, revealing the religious dimension that he considered the deepest layer of his thought.
In the final years of his life, Kierkegaard launched a fierce public attack on the Danish People's Church, which he considered a parody of authentic Christianity. Through a series of pamphlets called The Moment, he argued that the comfortable, state-sponsored religion of Denmark had nothing in common with the radical, self-sacrificing faith demanded by the New Testament. The campaign exhausted him physically and financially. On October 2, 1855, he collapsed in the street in Copenhagen and was taken to Frederiks Hospital, where he died on November 11, 1855, at the age of forty-two. Largely ignored or dismissed during his lifetime, Kierkegaard was rediscovered in the twentieth century and recognized as a decisive influence on existentialism, Protestant theology, psychology, and literary theory. Thinkers as diverse as Martin Heidegger, Jean-Paul Sartre, Karl Barth, W. H. Auden, and Ludwig Wittgenstein acknowledged their debt to the solitary Dane who insisted that existence can never be captured in a system.
Kierkegaard Quotes on Anxiety, Freedom, and the Self
Kierkegaard quotes on anxiety, freedom, and the self penetrate to the existential depths of human experience with unmatched psychological precision. His famous definition of anxiety as "the dizziness of freedom" — from The Concept of Anxiety (1844), written under the pseudonym Vigilius Haufniensis — identifies the peculiar vertigo that accompanies our awareness of infinite possibility. Unlike fear, which has a specific object, anxiety confronts us with the open-ended nature of our own freedom: we are anxious precisely because we could do anything, and nothing guarantees the rightness of our choices. Kierkegaard's personal life was a theater of anxiety: haunted by his father's intense religiosity and guilty secrets, by the deaths of five of his seven siblings, and by the painful decision to break his engagement to Regine Olsen in September 1841, he channeled his inner turmoil into a body of work that anticipated Freudian psychoanalysis, Heideggerian existentialism, and modern theories of anxiety disorders. His companion work The Sickness Unto Death (1849) extended the analysis to despair — the failure to be oneself, a condition he considered universal and typically unconscious — providing what remains the most searching philosophical anatomy of the divided self.
"Anxiety is the dizziness of freedom."
The Concept of Anxiety, Chapter 1 — Kierkegaard's most famous single line. Anxiety arises not from external threats but from the overwhelming realization that we are free to choose, and that nothing in the universe can make the choice for us.
"The most common form of despair is not being who you are."
The Sickness Unto Death, Part One — Despair, for Kierkegaard, is not simply sadness but the refusal or inability to become one's true self. Most people live in quiet despair by conforming to what others expect rather than confronting who they actually are.
"Life can only be understood backwards; but it must be lived forwards."
Journals, 1843 — One of the most quoted lines in all of philosophy. We can make sense of our lives only in retrospect, yet we have no choice but to act in the present without knowing how the story will end.
"People demand freedom of speech as a compensation for the freedom of thought which they seldom use."
Either/Or, Part One — A cutting observation about the gap between political liberty and genuine intellectual independence. Most people clamor for the right to speak without ever doing the hard work of thinking for themselves.
"Not just in commerce but in the world of ideas too our age is putting on a veritable clearance sale. Everything can be had so dirt cheap that one begins to wonder whether in the end anyone will want to make a bid."
Fear and Trembling, Preface — Kierkegaard laments that his age has made everything too easy, stripping faith and philosophy of their difficulty and danger. When great ideas are sold at bargain prices, they lose the very quality that makes them great.
"The self is a relation that relates itself to itself."
The Sickness Unto Death, Introduction — The dense opening sentence of one of Kierkegaard's greatest works. The self is not a static thing but an ongoing activity of relating the finite and the infinite, the temporal and the eternal, within oneself.
"To dare is to lose one's footing momentarily. Not to dare is to lose oneself."
Journals, 1846 — The risk of action may cause a momentary stumble, but the refusal to risk anything at all leads to the permanent loss of one's authentic self. Inaction is the greater danger.
Kierkegaard Quotes on Faith and the Leap
Kierkegaard quotes on faith and the leap express his radical understanding of religious commitment as a passionate, individual act that transcends rational proof. His teaching that prayer transforms not God but "the nature of the one who prays" redefines religious practice as a form of subjective transformation rather than an attempt to influence cosmic events. His most sustained exploration of faith, Fear and Trembling (1843), meditates on Abraham's willingness to sacrifice Isaac — a story that Kierkegaard saw as illustrating the "teleological suspension of the ethical," in which faith demands actions that cannot be justified by universal moral principles. Written under the pseudonym Johannes de Silentio and composed in the devastated months following his break with Regine, the work operates simultaneously as philosophical treatise and encoded personal confession. Kierkegaard's fierce attacks on the established Danish Church in his final years — waged through his self-published journal The Moment (Øieblikket) — argued that comfortable, culturally accommodated Christianity was an outright betrayal of the radical, world-defying faith demanded by the New Testament. His insistence on the irreducibly personal nature of faith — that genuine belief cannot be inherited, institutionalized, or made comfortable — has influenced theologians from Karl Barth to Paul Tillich and remains central to existentialist approaches to religion.
"The function of prayer is not to influence God, but rather to change the nature of the one who prays."
Journals, 1847 — Kierkegaard redefines prayer as a transformative act directed inward. It is not a petition to bend the will of God but a discipline through which the human self is broken open and reshaped.
"Faith is the highest passion in a human being. Many in every generation may not come that far, but none goes further."
Fear and Trembling, Epilogue — Faith is not a stage to be surpassed by reason or philosophy. It is the ultimate achievement of human existence, requiring the greatest courage and the deepest passion.
"The knight of faith is the individual who is able to make the movement of infinite resignation and then, by virtue of the absurd, grasp the whole of temporal existence once more."
Fear and Trembling, Problema I — The knight of faith surrenders everything and then receives it back, not through logic but through an act of trust that defies rational comprehension. This double movement is the essence of authentic faith.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true."
Works of Love, Part One — Kierkegaard warns against both credulity and cynicism. The refusal to accept uncomfortable truths is just as much a form of self-deception as swallowing a lie.
"Without risk there is no faith. Faith is precisely the contradiction between the infinite passion of the individual's inwardness and the objective uncertainty."
Concluding Unscientific Postscript, Part Two — Faith cannot exist where there is certainty. It is born precisely in the gap between passionate commitment and the impossibility of objective proof. Remove the risk, and faith evaporates.
"The Bible is very easy to understand. But we Christians are a bunch of scheming swindlers. We pretend to be unable to understand it because we know very well that the minute we understand, we are obliged to act accordingly."
Journals, 1854 — A blistering attack on Christendom's intellectual dishonesty. The difficulty of Christianity, Kierkegaard insists, is not in understanding it but in living it — and most Christians prefer confusion to obedience.
Kierkegaard Quotes on Love, Suffering, and the Human Condition
Kierkegaard quotes on love, suffering, and the human condition reveal the depth of feeling beneath the philosophical complexity of his authorship. His charming observation that "the door to happiness opens outward" — meaning that pursuing happiness directly causes us to push against the door rather than stepping back to let it open — encapsulates the existentialist insight that fulfillment comes through engagement, commitment, and self-giving rather than self-seeking. Kierkegaard's analysis of love in Works of Love (1847) distinguishes between preferential love (erotic love and friendship, which choose their objects) and Christian love of neighbor, which is commanded and therefore universal. His personal experience of love's suffering — the agonizing renunciation of Regine Olsen, whom he continued to love for the rest of his life — gave his philosophical reflections on love, sacrifice, and the pain of finite existence an authenticity that purely academic philosophy rarely achieves. He bequeathed his entire literary estate to Regine, a final gesture of devotion to the woman whose loss had been the wound from which his greatest works emerged.
"The door to happiness opens outward."
Either/Or, Part Two — A deceptively simple image with enormous philosophical weight. If you try to push the door inward — by grasping, striving, and demanding happiness — you only hold it shut. Happiness comes by turning outward, toward others and toward the world.
"Love does not alter the beloved, it alters itself."
Works of Love, Part Two — True love is not a project of reforming the other person. It is a transformation of the lover, who learns to see and accept the beloved as they truly are, without conditions or demands.
"What labels me, negates me."
Journals, 1849 — The moment you reduce a living, existing individual to a category or label, you destroy the very thing that makes them who they are. Existence always overflows the containers we build for it.
"Face the facts of being what you are, for that is what changes what you are."
Journals, 1848 — Self-transformation begins not with fantasy or ambition but with the honest confrontation of one's present reality. Only by accepting who you are right now can you begin to become who you might be.
"It is perfectly true, as the philosophers say, that life must be understood backwards. But they forget the other proposition, that it must be lived forwards."
Journals, 1843 — The fuller version of his most famous reflection. Kierkegaard directs his irony at the Hegelian philosophers who believe that backward-looking understanding is sufficient. Understanding is never enough — we must still act into the unknown.
"A man who as a physical being is always turned toward the outside, thinking that his happiness lies outside him, finally turns inward and discovers that the source is within him."
Journals, 1844 — The existential turning point. After exhausting the pursuit of external pleasures and achievements, the individual discovers that genuine fulfillment has been waiting inside all along, in the depths of inwardness.
"Boredom is the root of all evil — the despairing refusal to be oneself."
Either/Or, Part One — For the aesthete in Either/Or, boredom is the great enemy. But Kierkegaard's deeper point is that boredom signals a failure of selfhood — a refusal to engage passionately with one's own existence.
Kierkegaard Quotes on Truth, Subjectivity, and the Individual
Kierkegaard quotes on truth, subjectivity, and the individual challenge the Western philosophical tradition's quest for objective, impersonal knowledge. His provocative declaration that "subjectivity is truth" — from Concluding Unscientific Postscript (1846) — does not deny the existence of objective facts but argues that the truths that matter most to human existence (about God, death, love, meaning) can only be appropriated through passionate personal commitment, not through detached rational analysis. This emphasis on subjective appropriation over objective knowledge was directed against the Hegelian system that dominated Danish intellectual life, which claimed to have comprehended the whole of reality within a comprehensive logical system. Kierkegaard produced an extraordinary body of work in just over a decade, writing under numerous pseudonyms (Johannes Climacus, Anti-Climacus, Judge William, Victor Eremita, and others) that presented conflicting philosophical viewpoints without resolving them into a single system — a strategy of "indirect communication" designed to force the reader into independent thought rather than passive agreement. He died on November 11, 1855, at the age of forty-two, after collapsing on a Copenhagen street, having spent his final months in a fierce public battle against the Danish Church that exhausted his physical and financial resources.
"Subjectivity is truth."
Concluding Unscientific Postscript, Part Two — Kierkegaard's most provocative philosophical claim. Truth in matters of existence is not an impersonal fact but a lived relationship between the individual and reality. What matters is not what you know but how you exist in relation to what you know.
"The crowd is untruth."
Journals, 1846 — One of Kierkegaard's most radical declarations. Whenever people merge into a crowd, individual responsibility dissolves. The crowd allows each person to hide behind collective anonymity, evading the burden of personal choice.
"Once you label me you negate me."
Journals — A compressed restatement of Kierkegaard's insistence that every individual exceeds all categories. Systems of thought can classify and arrange, but the living, breathing, choosing individual always escapes the net.
"I see it all perfectly; there are two possible situations — one can either do this or that. My honest opinion and my friendly advice is this: do it or do not do it — you will regret both."
Either/Or, Part One — The aesthete's ironic dilemma. No matter what you choose, regret is inevitable. Kierkegaard uses this to expose the paralysis of a life lived without ethical commitment — the inability of pure detachment to escape suffering.
"It is so hard to believe because it is so hard to obey."
Journals, 1850 — The difficulty of faith is not intellectual but existential. We claim we cannot believe, but the real obstacle is that we do not want to live the way belief demands. Doubt is often disobedience in disguise.
Frequently Asked Questions About Soren Kierkegaard
What did Kierkegaard mean by 'the sickness unto death'?
The Sickness unto Death (1849), published under the pseudonym Anti-Climacus, identifies despair as the universal human condition -- a "sickness unto death" that is not physical death but a spiritual death-in-life. Kierkegaard analyzed three forms of despair: not knowing one has a self (unconscious despair), not wanting to be oneself (despair of weakness), and defiantly wanting to be oneself without God (despair of defiance). All three forms involve a broken relationship between the finite and infinite aspects of the self. The only cure for despair, Kierkegaard argued, is faith -- transparently grounding oneself in the Power that established the self (God). The work deeply influenced 20th-century existentialism, theology, and psychotherapy.
Why did Kierkegaard use pseudonyms?
Soren Kierkegaard published many of his most important works under pseudonyms -- including Johannes de Silentio (Fear and Trembling), Johannes Climacus (Philosophical Fragments), Anti-Climacus (The Sickness unto Death), and Victor Eremita (Either/Or). He used pseudonyms not to hide his identity (everyone in Copenhagen knew who wrote them) but as a deliberate philosophical method called "indirect communication." Each pseudonym represents a different existential perspective or stage of life, and Kierkegaard wanted readers to engage with these viewpoints directly rather than simply accepting them on his personal authority. He believed that existential truths cannot be communicated directly through propositions but must be experienced and appropriated by each individual through their own reflection.
What was Kierkegaard's relationship with Regine Olsen?
Kierkegaard's broken engagement to Regine Olsen is one of the most analyzed romantic relationships in intellectual history. He became engaged to Regine in 1840 but broke off the engagement in 1841, despite still being deeply in love with her. The reasons remain debated: Kierkegaard may have felt that his melancholic temperament, inherited from his father, made him unsuitable for marriage, or that marriage would prevent him from fulfilling his religious and philosophical vocation. The breakup caused a public scandal in Copenhagen and haunted Kierkegaard for the rest of his life. The experience permeates his philosophical works, particularly Either/Or, Fear and Trembling, and Repetition, which explore the tensions between aesthetic pleasure, ethical commitment, and religious sacrifice.
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