Social Contract Theory

Overview

Social contract theory is the tradition of political philosophy that grounds the legitimacy of government in an agreement, real or hypothetical, among the individuals subject to it. Rather than deriving political authority from divine right, natural hierarchy, or conquest, contract theorists argue that the state is rightful only insofar as it rests on the consent of the governed, given under conditions that rational individuals would accept. The theory emerged in the seventeenth century in the work of Thomas Hobbes, John Locke, and Jean-Jacques Rousseau, and it supplied the conceptual framework for the modern idea that government exists by the permission of the people.

The tradition is held together less by a single doctrine than by a shared method. Contract theorists begin with a thought experiment, the state of nature, a condition without government in which human beings interact as free and equal individuals. They then ask what reasons such individuals would have to leave this condition and submit to political authority. The answers differ dramatically: Hobbes deduces absolute sovereignty, Locke limited government, Rousseau the rule of the general will. The Stanford Encyclopedia notes that the power of the contract tradition lies precisely in this shared starting point, which allows radically different conclusions to be argued from a common framework, and which makes the terms of political legitimacy a matter of explicit reasoning rather than inherited assumption.

Historical Development

Social contract theory has ancient antecedents. The Greek sophists debated whether law and justice were natural or conventional, and some argued that political authority rested on agreement. Cicero and other Roman thinkers invoked the idea that the people confer legitimacy on rulers. But contract theory as a systematic tradition arose in the seventeenth century, in the specific conditions of early modern Europe: the wars of religion, the breakdown of medieval political authority, and the rise of a new science of human nature modeled on geometry and mechanics.

Hobbes's Leviathan (1651) was the first fully developed contract theory. Writing amid the English Civil War, Hobbes argued that the state of nature, a condition without a common power, would be a war of all against all, and that rational individuals would agree to confer absolute authority on a sovereign in exchange for security. Locke's Second Treatise of Government (1689) transformed the argument. He pictured the state of nature as a condition of relative peace governed by natural law, in which individuals possess natural rights to life, liberty, and property. Government is established by consent to protect these rights, and its authority is limited by its purpose; when it violates the trust of the people, they retain the right to dissolve it. Rousseau's The Social Contract (1762) offered a third version, in which the contract creates a people governed by the general will, and in which sovereignty is inalienable and indivisible, residing permanently in the citizens themselves.

The Enlightenment context was decisive. The contract theorists wrote in a world where the legitimacy of hereditary monarchy, feudal privilege, and ecclesiastical authority was under sustained attack, and their arguments provided the intellectual ammunition for two great revolutions. The American Revolution drew directly on Locke: the Declaration of Independence states that governments derive their just powers from the consent of the governed and that the people have the right to alter or abolish them. The French Revolution drew on Rousseau: the Declaration of the Rights of Man and of the Citizen proclaimed that the principle of all sovereignty resides essentially in the nation. The Stanford Encyclopedia observes that the contract tradition gave both revolutions their core vocabulary: consent, natural rights, popular sovereignty, and the right of resistance.

Core Ideas

The State of Nature

The state of nature is the foundational thought experiment of contract theory. It is a hypothetical condition, prior to or without government, in which human beings exist as free and equal individuals, bound by no common authority. Its purpose is analytic, not historical: the contract theorists do not claim that it describes an actual past but that it reveals the logic of political life by stripping away the assumptions that authority ordinarily takes for granted. By asking what life would be like without government, they can ask what government is for and what makes it legitimate.

The accounts differ sharply. For Hobbes, the state of nature is a war of every man against every man, solitary, poor, nasty, brutish, and short, because the absence of a common power leaves each person insecure and driven to preemptive violence. For Locke, it is a relatively peaceful condition governed by natural law and reason, in which individuals possess rights and can enforce them, but which lacks an impartial judge and so is inconvenient and prone to dispute. For Rousseau, natural humans are free, self-sufficient, and compassionate, and it is society and inequality that corrupt them; the question is whether a political association can restore the freedom nature provided. The Stanford Encyclopedia notes that these different pictures of the state of nature are not merely empirical disagreements but reflect different conceptions of human nature and different conclusions about what government should do.

The Social Contract

The social contract is the mechanism by which the state of nature is left behind and political authority established. In its general form, it is an agreement among individuals to transfer some of their natural rights and powers to a common authority, in exchange for the benefits of civil order. The precise terms of the transfer define the character of the resulting government. Hobbes's contract transfers all natural rights to an absolute sovereign, because only undivided power can secure peace. Locke's contract transfers only the right to enforce the law of nature, reserving the fundamental rights to life, liberty, and property, and creating a government of limited and fiduciary power. Rousseau's contract transfers each individual to the whole community, creating a collective body governed by the general will, in which each person retains his freedom by participating in the making of the laws.

The contract is hypothetical rather than historical, and this has been a persistent target of criticism. David Hume argued that no actual government rests on the consent of its subjects, and that obedience is better explained by habit and utility than by a primordial agreement. The contract theorists were aware of this objection and generally conceded that the contract is a fiction, but they held that it is a necessary and illuminating one: it specifies the conditions under which a government would be legitimate, and it allows existing governments to be judged against that standard.

Sovereignty and Consent

The contract tradition is defined by its answer to the question of sovereignty: where does ultimate political authority reside? Each theorist gives a different answer. Hobbes locates sovereignty in the person or assembly created by the contract, and he insists that this sovereignty is absolute, indivisible, and irrevocable. Locke locates it in the people, who retain the right to judge whether their government has violated its trust and to replace it if it has. Rousseau locates it in the people assembled, and he argues that sovereignty is inalienable and cannot be represented, so that the people must legislate for themselves.

Consent is the connective concept. For all three theorists, legitimate government rests on the agreement of those subject to it, and the terms of that agreement define the limits of what government may do. The Stanford Encyclopedia notes that the doctrine of consent was revolutionary in its implications: if authority depends on the agreement of the governed, then no government is legitimate by nature or by divine right, and every government must justify itself to those it rules. This is the principle that the contract theorists bequeathed to modern constitutionalism and democratic theory, and it remains the standard by which power is held accountable to the people over whom it is exercised.

Natural Rights

Contract theory is closely associated with the doctrine of natural rights, the claim that individuals possess rights prior to and independent of political authority. Locke's formulation is the most influential: human beings in the state of nature possess rights to life, liberty, and property, grounded in natural law and in the self-ownership of the individual. Government is instituted to protect these rights, and its authority is limited by them. Hobbes, by contrast, held that in the state of nature there are no rights and no justice, only the natural right of self-preservation, and that rights and justice come into being only with the contract and the sovereign who enforces it. Rousseau rejected the very idea of natural rights as commonly understood, arguing that rights are created by the social contract and the general will rather than pre-existing them.

The Stanford Encyclopedia observes that the doctrine of natural rights, especially in Locke's version, became one of the most powerful ideas in modern political thought. It supplied the philosophical foundation of the American and French declarations of rights, and it evolved into the modern theory of human rights. The tension between Hobbes's view that rights are created by the sovereign and Locke's view that rights limit the sovereign remains a live question in the philosophy of rights and justice, and it runs through contemporary debates over the scope of individual liberty and the authority of the state.

Key Thinkers

The three founders of social contract theory developed the tradition in sharply different directions. Thomas Hobbes, in Leviathan (1651), constructed the first systematic contract theory, deducing absolute sovereignty from the terror of the state of nature. John Locke, in the Second Treatise of Government (1689), transformed the argument to defend limited government, natural rights, and the right of revolution, supplying the theoretical framework of English constitutionalism and the American founding. Jean-Jacques Rousseau, in The Social Contract (1762), radicalized the tradition, arguing for popular sovereignty and the general will and providing the philosophical vocabulary of the French Revolution. Kant, though not a contract theorist in the classical mold, drew on Rousseau to develop his own doctrine of political obligation grounded in the idea of a hypothetical original contract and the autonomy of rational agents.

Influence

Social contract theory reshaped the political imagination of the modern world. Its doctrines of consent, natural rights, and popular sovereignty supplied the intellectual framework of the American and French Revolutions and entered the constitutional documents of every democratic state. The idea that government derives its just powers from the consent of the governed, stated in the American Declaration of Independence, is a direct inheritance from Locke, and the principle that sovereignty resides in the nation, proclaimed in the French Declaration of the Rights of Man, descends from Rousseau. The Stanford Encyclopedia notes that the contract tradition's influence extends beyond its specific conclusions to its method: the practice of judging existing institutions against the standard of what rational individuals would agree to has become a permanent feature of political philosophy.

In the twentieth century, the contract tradition was revived and transformed by John Rawls. In A Theory of Justice (1971), Rawls proposed a thought experiment, the original position, in which rational individuals behind a veil of ignorance, unaware of their place in society, would choose principles of justice. Rawls's contract is purely hypothetical and its purpose is not to justify a particular government but to derive principles of fairness for the basic structure of society. His work reopened the contract tradition as a live philosophical program and generated a vast literature on the nature of consent, fairness, and the terms of social cooperation. The Stanford Encyclopedia observes that modern contractarian thought, from Rawls through Scanlon and Gauthier, demonstrates the continuing vitality of the contract idea: that the terms of political and social life should be ones that no rational person could reasonably reject.

Sources

1. Stanford Encyclopedia of Philosophy, "Social Contract Theory." The standard scholarly reference on the contract tradition, covering Hobbes, Locke, Rousseau, and modern contractarian thought.
2. Stanford Encyclopedia of Philosophy, "Thomas Hobbes." A comprehensive treatment of Hobbes's political philosophy and the arguments of Leviathan.
3. Stanford Encyclopedia of Philosophy, "Locke's Political Philosophy." A detailed account of Locke's Second Treatise, natural rights, and the theory of limited government.
4. Stanford Encyclopedia of Philosophy, "Rousseau's Political Philosophy." A scholarly treatment of the general will, popular sovereignty, and the arguments of The Social Contract.