The Crescent and the Constitution

Why Islam, in Its Foundational Form, Is Incompatible with Western Liberty — An Analytical Essay

What Western Liberty Actually Means

To understand the incompatibility, one must first understand what Western liberal democracy actually requires — not as a cultural preference, but as a structural necessity.

The Western political tradition, descending from Greek philosophy, Roman law, the Reformation, the Enlightenment, and the Anglo-American constitutional tradition, rests on several irreducible commitments. First, the sovereignty of the people: governments derive their just powers from the consent of the governed, not from divine mandate. Second, equality before the law: no person is legally superior to another by virtue of religion, sex, or ancestry. Third, individual rights that the state may not transgress: freedom of conscience, speech, religion, and press. Fourth, the right of exit: a citizen may change his political allegiance, his community, and — critically — his religion, without legal penalty. Fifth, the rule of law as distinct from the rule of religious authority: the law is made by human legislatures, interpreted by independent courts, and answerable to no clerical hierarchy.

These are not merely Western preferences. They are the conditions under which a pluralistic society of free individuals can coexist. Remove any one of them and you no longer have liberal democracy; you have something else — theocracy, oligarchy, or authoritarianism in some combination.

Islam, in its orthodox and historically practiced form, directly contradicts each of these commitments.

Not a Religion in the Western Sense — A Total System

A common error in Western discussions of Islam is to evaluate it by the standard that Westerners apply to Christianity or Judaism — as a faith tradition concerned primarily with one’s relationship to God, moral formation, and the afterlife, which leaves the political realm to secular authority. This error flows from a genuine misunderstanding of what Islam claims to be.

Islam does not make this separation, and it has never claimed to. The word “Islam” itself means submission — submission not merely of the heart, but of the whole person, the whole community, and ideally the whole world to the will of Allah as revealed through the Prophet Muhammad and codified in the Quran and the Hadith. The concept of the ummah, the global community of believers, is not merely spiritual. It is a political entity, one that in classical Islamic political theory recognizes no permanent, legitimate boundary between itself and the rest of humanity.

Bernard Lewis, one of the West’s foremost scholars of Islamic history, wrote plainly in The Crisis of Islam (2003): “In the Muslim world view, there is a basic division of mankind into the House of Islam (Dar al-Islam), in which Muslim government and law prevail, and the rest, which is called the House of War (Dar al-Harb).” The intermediate category — a house of truce or treaty — was a pragmatic accommodation, not a permanent acceptance of non-Muslim political sovereignty.

This is not a fringe interpretation invented by modern radicals. It is the classical, orthodox framework of Islamic jurisprudence, found in the writings of scholars as mainstream as the 14th-century historian Ibn Khaldun, who described jihad as “a religious duty because of the universalism of the Muslim mission and the obligation to convert everybody to Islam either by persuasion or by force.” It is found in Al-Mawardi’s Al-Ahkam al-Sultaniyya (The Ordinances of Government), written in the 11th century and still considered a foundational text of Islamic political theory. It is found, most directly, in the Quran itself.

The Scripture and What It Commands

Any honest engagement with the question of Islam and violence must reckon with the Quran directly — not with a sanitized selective reading, but with the full text as understood by centuries of Islamic jurisprudence.

Surah 9, At-Tawbah (The Repentance), is among the most significant chapters for political and military theology, and it was among the last revealed to Muhammad. Under the doctrine of naskh — abrogation, by which later revelations supersede earlier, more peaceful ones — it carries particular authority. Verse 5, often called the “Verse of the Sword,” instructs: “And when the sacred months have passed, then kill the polytheists wherever you find them, and capture them and besiege them and sit in wait for them at every place of ambush.”

Verse 29 of the same chapter commands: “Fight those who do not believe in Allah or in the Last Day… fight until they give the jizyah willingly while they are humbled.” This verse is the scriptural foundation of the dhimmi system, discussed at length below. Surah 8:39 commands: “And fight them until there is no fitnah and until the religion, all of it, is for Allah.”

Muslim scholars who seek to limit these verses point to earlier, more tolerant passages and to specific historical contexts. These readings exist and deserve acknowledgment. However, the mainstream, orthodox interpretation — the one that has governed Islamic jurisprudence for the majority of Islamic history — treats these later verses as establishing the normative framework for Islam’s relationship with the non-Muslim world. The 8th-century jurist al-Shafi’i, founder of one of Islam’s four great legal schools, wrote that the religious authorities must ensure that armed expeditions against unbelievers are organized each year without fail. This is not terrorism. This is classical, mainstream Islamic jurisprudence.

The Prophet: A Moral Reckoning

The figure of Muhammad stands at the center of Islamic faith in a way that has no precise parallel in Christianity. Christians revere Jesus as divine; his moral perfection is axiomatic. Muslims hold Muhammad to be a man — but the ideal man, the uswa hasana (perfect example), whose conduct is binding precedent for all Muslims through the Hadith (recorded sayings and actions). To question Muhammad’s conduct is not, in Islamic theology, merely to question a historical figure. It is to question the model that all Muslims are to emulate.

The historical record of Muhammad’s life, drawn from the earliest Muslim biographies — Ibn Hisham’s Sirat Rasul Allah, based on the earlier work of Ibn Ishaq — and from the canonical Hadith collections of Bukhari and Muslim, reveals a figure whose conduct was not that of a peaceful spiritual leader but of a warlord.

Muhammad personally ordered and participated in military raids against caravans and settlements. He ordered the execution of prisoners after the Battle of Badr. Following the Battle of the Trench (627 CE), he presided over the massacre of the Banu Qurayza tribe, in which between 600 and 900 Jewish men were beheaded and their women and children enslaved. This account comes not from hostile external sources but from Ibn Hisham’s biography, one of the most authoritative early Muslim sources available.

The question of his marriage to Aisha is perhaps the most morally confronting element of his biography for modern readers. The canonical Hadith — specifically Sahih Bukhari, volume 7, book 62, number 64 — records that Muhammad married Aisha when she was six years old and consummated the marriage when she was nine. The source is Aisha herself, as recorded in the most authoritative collection of Hadith in Sunni Islam. This is not a Western invention or a historical slander. It is the textual record that orthodox Islam has accepted as authentic for over a thousand years, and which has served as justification for child marriage laws in numerous Muslim-majority nations to this day.

Muhammad also engaged in the ownership and sale of enslaved people, the taking of concubines from conquered peoples, and the assassination of poets and critics who satirized him — including the poetess Asma bint Marwan, whose killing is recorded in Ibn Hisham’s biography as having been ordered by Muhammad because of her verse criticizing him. These are not peripheral details. They are part of the sunnah — the normative example — that Islamic jurisprudence draws upon when formulating law.

The Status of Women Under Islamic Law

The incompatibility of classical Islamic law with Western conceptions of equality is perhaps nowhere more starkly visible than in its treatment of women.

In Sharia as codified across the four major Sunni legal schools, women inherit half of what their male counterparts receive (Quran 4:11). The testimony of one man equals that of two women in legal proceedings (Quran 2:282). A husband may divorce his wife unilaterally by pronouncing talaq three times; a wife must petition a court and prove specific grounds for divorce, a process that in many jurisdictions is practically inaccessible. A woman may not leave her home without the permission of her mahram (male guardian). She may be beaten by her husband as a last disciplinary resort — a practice Quran 4:34 explicitly permits.

These are not the innovations of radical interpretations. They are the mainstream rulings of the major classical jurisprudential schools, upheld in the law of Saudi Arabia, Iran, Afghanistan, Sudan, Pakistan, and numerous other Muslim-majority states. The scholar Kecia Ali, herself a Muslim feminist and professor of religion at Boston University, acknowledges in her book Sexual Ethics and Islam (2006) that these rulings represent the dominant classical tradition and cannot be dismissed as fringe positions.

In Iran, the Islamic Revolution of 1979 made the hijab legally compulsory for all women, Muslim and non-Muslim alike, with criminal penalties for violation. In Afghanistan under Taliban governance, women are banned from education beyond the sixth grade, from employment outside the home, and from appearing in public without a male escort. In Pakistan, Saudi Arabia, and parts of Egypt and Indonesia, so-called “honor killings” — the murder of women by family members who believe they have brought shame — continue to be committed, and in some jurisdictions, legal defenses based on “honor” reduce or eliminate criminal sentences for perpetrators. The United Nations Population Fund has estimated that thousands of women are killed annually in honor killings worldwide, with the overwhelming majority occurring in Muslim-majority societies.

The Architecture of Subjugation: Dhimmis and the Jizya

One of the most illuminating aspects of classical Islamic political order — and one of the most direct demonstrations of its imperial character — is the dhimmi system, which governed the status of non-Muslims living under Muslim rule.

The term dhimmi (from the Arabic ahl al-dhimma, “people of the covenant”) referred to non-Muslim subjects of an Islamic state who had been accorded a protected, though decisively subordinate, legal status. This protection was not unconditional benevolence. It was a contract imposed entirely on the conquerors’ terms.

The jizya was the poll tax required of dhimmis in exchange for the dubious privilege of continued existence as non-Muslims under Islamic governance. The Quranic basis is explicit in Surah 9:29 — non-Muslims were to pay the jizya “willingly while they are humbled.” The word translated “humbled” in Arabic is saghirun, and the classical jurists were not ambiguous about its meaning. Some traditions held that the jizya was to be paid by the dhimmi kneeling while the tax collector remained standing, with a symbolic gesture of submission accompanying the payment.

Beyond the financial burden, dhimmis lived under a comprehensive set of legal disabilities. The Pact of Umar — a document attributed to the Caliph Umar ibn al-Khattab in the 7th century and accepted as normative in classical jurisprudence — established the paradigmatic conditions. Dhimmis were prohibited from building new houses of worship or repairing existing ones without permission, from riding horses, from carrying weapons, from wearing the same clothing as Muslims, from displaying religious symbols publicly, from constructing homes taller than those of Muslims, and from giving testimony against Muslims in court.

Critically — and this detail is frequently omitted in popular discussion — the dhimmi framework applied only to ahl al-kitab, the “People of the Book”: Jews and Christians, who were recognized as having received earlier divine revelation. Polytheists, pagans, Hindus, and others not recognized as People of the Book received no such accommodation. Their options under classical jurisprudence were stark: conversion or death. The Arab conquests of Persia, the Mughal campaigns across India, and the Ottoman advances through the Balkans were conducted within this coercive framework. Historian Will Durant, in The Story of Civilization, described the Islamic conquest of India in terms suggesting catastrophic violence against Hindus who refused conversion — a characterization debated in its precise figures but not in its essential coercive logic.

The historian Bat Ye’or, a Jewish scholar who spent her career documenting the condition of Jews and Christians under Islamic rule, coined the term “dhimmitude” to describe this systematic subordination. Her works, including The Dhimmi: Jews and Christians Under Islam (1985), provide an exhaustive historical record drawn from primary sources across the Islamic world.

The Expansion of Islam: Sword Before Scripture

The standard apologetic narrative about the spread of Islam is that it spread primarily through trade, missionary work, and the spiritual appeal of its message. There is a modest element of truth in this for certain peripheral regions. But the foundational expansion of Islam — from the Arabian Peninsula across the Middle East, North Africa, Persia, Central Asia, the Indian subcontinent, and into Europe — was accomplished overwhelmingly through military conquest.

Within a century of Muhammad’s death in 632 CE, Arab Muslim armies had dissolved the entire Persian Sassanid Empire, had stripped the Byzantine Empire of its Syrian, Palestinian, Egyptian, and North African territories, and had crossed the Strait of Gibraltar into the Iberian Peninsula. By 711 CE, Muslim forces had landed in what is now Spain. By 732 CE, they had crossed the Pyrenees into France, where they were halted by Charles Martel at the Battle of Tours — a battle that many historians regard as one of the most consequential in Western history.

The territories that fell to these conquests were not ungoverned empty lands. Syria was one of the oldest Christian regions in the world. Alexandria in Egypt was a center of Christian theology. Jerusalem had been under Christian governance since the reign of Constantine. These were Christian and Zoroastrian societies conquered by military force and subsequently governed under the Islamic dhimmi framework.

The Ottoman Empire continued this expansion for centuries. Constantinople — the seat of Eastern Christendom, the cultural and spiritual capital of Greek Orthodox Christianity — fell to Ottoman forces in 1453 CE. The Hagia Sophia, one of the greatest Christian basilicas ever constructed, was immediately converted into a mosque. Ottoman armies besieged Vienna in 1529 and again in 1683, when the city was finally relieved at the Battle of Vienna — widely regarded as the high-water mark of Islamic expansion into the European heartland.

The Crusades: Defense Misremembered as Aggression

Few episodes of medieval history have been more systematically misrepresented in contemporary discourse than the Crusades. In the prevailing popular narrative, they are presented as an unprovoked European Christian assault on a peaceful Muslim world. This narrative is historically illiterate.

The First Crusade was called by Pope Urban II in 1095 CE — approximately 460 years after the initial Islamic conquest of the Holy Land, and directly in response to a request for aid from the Byzantine Emperor Alexios I Komnenos, whose empire was under severe military pressure from the Seljuk Turks following their devastating victory at the Battle of Manzikert in 1071 CE. The Crusaders’ goal was the recovery of territories that had been Christian before Islamic conquest — not the conquest of Islamic homeland. Arabia was not invaded. Mecca was not targeted.

Thomas Madden, one of the foremost contemporary historians of the Crusades, wrote in The New Concise History of the Crusades (2005): the Crusades were “in every way a defensive war… a direct response to Muslim aggression — an attempt to turn back or defend against Muslim conquests of Christian lands.”

This does not sanitize the Crusaders’ conduct. The sack of Jerusalem in 1099 CE, in which many Muslim and Jewish civilians were massacred, was a genuine atrocity by any standard. The sack of Constantinople in 1204 CE — in which Crusaders turned on a Christian city — was a catastrophic betrayal driven by Venetian commercial interests and catastrophically misguided politics. Crusader violence against Jewish communities in the Rhineland was a moral horror without justification. These facts are not in dispute.

But the moral failures of particular Crusader campaigns do not erase the fundamental defensive character of the Crusading project. The Crusades were a belated, imperfect, and ultimately unsuccessful military response to four centuries of Islamic conquest of previously Christian territories. To present them as the original act of Western aggression, shorn of that four-century context, is not history. It is advocacy.

Freedom of Conscience — The Right That Islam Denies

Among the freedoms that liberal democracy considers most fundamental is the freedom of conscience — the right to believe, or not to believe, according to one’s own reason and experience, without state coercion. This includes the right to change one’s religion.

Islamic law, in its orthodox formulation, denies this right absolutely and enforces the denial with lethal sanction. Ridda — apostasy, the abandonment of Islam — is regarded as a capital offense across all four major Sunni legal schools and in Shia jurisprudence as well. The Hadith recorded in Bukhari is unambiguous: “Whoever changes his Islamic religion, then kill him.”

The contemporary reality is consistent with this doctrine. Apostasy is punishable by death under the law of Afghanistan, Iran, Qatar, Saudi Arabia, United Arab Emirates, Yemen, and several other Muslim-majority states. In Pakistan, blasphemy — which includes anything deemed insulting to the Prophet or the Quran — can result in a death sentence under Section 295-C of the Penal Code.

The implications for Western liberal democracy are profound. A political system that kills people for changing their beliefs is not compatible with the First Amendment to the United States Constitution, with Article 18 of the Universal Declaration of Human Rights, or with the foundational principle that the state has no authority over the contents of a citizen’s conscience.

The murder of the French schoolteacher Samuel Paty in 2020 for showing caricatures of Muhammad in a class on free speech, the decades-long fatwa against novelist Salman Rushdie for writing The Satanic Verses, and the ongoing threats against critics of Islam worldwide — these are not aberrations. They are the logical consequence of a doctrinal tradition that has never produced, within its mainstream, a secure culture of internal religious criticism.

Sharia and the Secular State

Sharia — Islamic law — is not merely a personal code of religious ethics. It is a comprehensive legal system governing criminal penalties, family law, commercial transactions, political authority, and relations with non-Muslims. Its incompatibility with the secular democratic state is structural, not incidental.

The 2013 Pew Research Center survey, The World’s Muslims: Religion, Politics and Society, found that substantial majorities of Muslims in many countries favor making Sharia the official law of the land — including 86% in Pakistan, 84% in Afghanistan, 74% in Egypt, 72% in Iraq, and 71% in Nigeria. Among those who favor Sharia, significant majorities in many countries support criminal punishments such as cutting off the hands of thieves and death for apostasy. These are not fringe views. They are the dominant positions in large populations.

Sharia-governed criminal law prescribes amputation of the hand for theft, flogging for alcohol consumption and fornication, death by stoning for adultery, and death for apostasy and blasphemy. These penalties are irreconcilable with the Eighth Amendment’s prohibition of cruel and unusual punishment, with the European Convention on Human Rights, and with every major international human rights instrument.

The Imperial Imperative

Having surveyed the doctrine, the history, and the contemporary reality, we can now name what this system is. It is, in structure and in historical function, an imperial order.

Imperialism, stripped of its specifically European colonial connotations, is any system that asserts the right to extend its political, legal, and cultural authority over other peoples, to govern those peoples under its own law, and to assign them diminished legal status if they refuse to assimilate. By this definition, classical Islamic political order is imperialist. It divides the world into the House of Islam and the House of War. It assigns inferior legal status to non-Muslim subjects. It funds its operations through discriminatory taxation. It designates conversion as the ideal outcome for conquered peoples and death as the alternative for those who hold to “incorrect” beliefs. It prohibits its own subjects from exiting the system on pain of death.

This is not the character of a religion in the Western constitutional sense. It is the character of a domain — a polity that happens to justify itself in religious terms. Ibn Warraq, a Pakistani-born scholar writing under a pseudonym for his own safety, concluded in Why I Am Not a Muslim (1995) that Islam is “totalitarian in nature” and that “the Islamic state is a theocracy” incompatible with democratic governance. Ayaan Hirsi Ali, the Somali-born Dutch politician and scholar who survived female genital mutilation, forced marriage, and a fatwa calling for her death, has written extensively in works such as Infidel (2007) and Heretic (2015) about the structural clash between Islam’s foundational claims and the foundational claims of Western liberal democracy. These are not outside critics. They are people formed within the tradition who concluded, from the inside, that the tradition has a structural problem it must confront.

The Reformation That Has Not Come

A thoughtful objection will be raised at this point: Christianity, too, once wielded political power abusively. The Inquisition tortured heretics. The Thirty Years’ War killed a third of the population of Central Europe in the name of theological dispute. And yet Christianity eventually produced the conditions for liberal democracy. Why cannot Islam undergo a similar reformation?

This is a fair challenge, and it deserves a serious answer. Christianity underwent reformation not because of some virtue intrinsic to the faith, but because a series of historical and intellectual pressures forced it. The printing press democratized the Bible. Martin Luther’s challenge to papal authority shattered the monopoly of clerical interpretation. The resulting Wars of Religion were so catastrophic that European elites, over several generations, concluded that the only solution to endless religious warfare was to remove religion from the seat of political authority — to create the secular state.

Islam has not undergone this process, and its structural features make that process more difficult. The doctrine of the Quran’s perfection asserts that the text is the direct, unaltered word of God, not a human document subject to historical criticism. The doctrine of Muhammad as the final prophet forecloses the possibility of subsequent religious development that supersedes his example. The absence of a centralized clerical authority means that reform-minded interpretations cannot achieve institutional dominance, and the tradition’s default remains its most conservative, text-literal expression.

Muslim reformers exist — Maajid Nawaz, Ayaan Hirsi Ali, Mustafa Akyol, Irshad Manji, and others — and they are courageous. But they remain a minority operating under genuine threat, and their interpretations do not yet represent the mainstream of Islamic legal and institutional life worldwide. Until a reformation of sufficient depth occurs — one that genuinely disavows political supremacism, renounces the death penalty for apostasy and blasphemy, establishes the equal legal status of women, and accepts the permanent legitimacy of non-Muslim governance — the structural tension between orthodox Islam and Western liberal democracy remains real, and no amount of polite evasion will dissolve it.

Conclusion: Honesty as the Beginning of Wisdom

The argument presented in this essay is not that Muslims cannot be good citizens of Western democracies. Many are. It is not that Islam has produced no art, scholarship, philosophy, or civilizational achievement. The Islamic Golden Age, from roughly the 8th through the 13th century, preserved classical Greek philosophy, advanced mathematics, astronomy, and medicine, and produced scholars whose work laid foundations for the European Renaissance.

The argument is more specific and more uncomfortable than either blanket condemnation or reflexive apology. It is this: Islam, as a doctrinal and political system grounded in its foundational texts and their mainstream historical interpretation, embeds within itself a set of commitments — to political supremacism, to legal discrimination against women and non-Muslims, to the coercive retention of adherents on pain of death, to the inseparability of religious and civil authority — that are structurally incompatible with the principles on which Western liberal democracy rests.

This is not a problem that can be resolved by polite avoidance, by the accusation of bigotry leveled at anyone who raises it, or by selecting the most moderate possible expression of Islamic opinion as if it were representative of the whole tradition. It is a problem that requires the honesty to name the tradition’s actual texts, the actual jurisprudence, the actual history, and the actual present-day practice as they are, not as we might wish them to be.

The great French philosopher Voltaire wrote that “those who can make you believe absurdities can make you commit atrocities.” What he understood — and what Western liberal democracy must urgently recover the courage to understand — is that ideas have consequences, that doctrines shape cultures, that legal systems reflect their theological foundations, and that a civilization which cannot honestly examine the ideas that threaten its foundations will not long remain capable of defending them.

To examine Islam critically, to insist that its political and legal doctrines meet the same standard of scrutiny applied to any other system that claims authority over human beings, is not hatred. It is the very exercise of the free inquiry upon which Western civilization is built. To refuse that examination in the name of cultural sensitivity is not tolerance. It is a failure of nerve that the founders of Western liberty — who risked far more than social disapproval to establish the freedoms we now inherit — would neither recognize nor excuse.