Thomas Hobbes

Introduction

Thomas Hobbes (1588–1679) revolutionized legal philosophy by grounding law in sovereign command rather than in nature or divine will. His masterpiece Leviathan (1651) provided a systematic defense of absolute sovereignty, a theory of the social contract, and a conception of law that prefigured legal positivism. Writing amid the English Civil War—a conflict that exposed the fragility of political order—Hobbes sought to establish the intellectual foundations of political and legal authority on the basis of rational self-interest rather than appeals to transcendent authority, divine right, or tradition. His materialist philosophy, which reduced all phenomena to matter and motion, provided the metaphysical foundation for his political theory.

The State of Nature and the Social Contract

Hobbes begins from a hypothetical state of nature—a condition without law, government, or common power. In this state, all individuals are equal in their capacity to harm one another, and competition, diffidence (mistrust), and glory drive perpetual conflict. Life is “solitary, poor, nasty, brutish, and short.” Natural right (ius naturale) is the liberty each person has to preserve their own life by any means necessary, including the right to all things. Natural law (lex naturalis) consists of rational precepts that forbid actions destructive of life. The fundamental law of nature is to seek peace and follow it; from this, Hobbes derives nineteen secondary laws of nature, including the obligations to keep covenants, show gratitude, accommodate oneself to others, forgive past wrongs, and submit disputes to arbitration. To escape the state of war, individuals covenant to transfer their right of self-governance to a sovereign—an “artificial person” who wields absolute authority. This social contract creates the commonwealth (civitas) and with it the possibility of law.

Law as Sovereign Command

Hobbes defined law as the command of the sovereign. “Law in general is not counsel, but command; nor a command of any man to any man, but only of a person whose command is addressed to one formerly obliged to obey him.” The sovereign—whether a monarch or an assembly—is the sole source of law. There is no law before or outside sovereign enactment. Custom becomes law only when the sovereign tacitly consents to it. This account severed law’s connection to morality, making obligation depend entirely on the authority of the lawgiver. “Authority, not truth, makes law” (Auctoritas, non veritas, facit legem). Hobbes distinguished law from mere advice or counsel: law is backed by the sovereign’s power to enforce it, while advice may be rejected without penalty.

The Role of the Sovereign

The sovereign is not party to the social contract and therefore cannot breach it. Subjects retain only the right of self-preservation—they cannot be compelled to kill themselves, to wound themselves, to refrain from defending themselves, or to confess to crimes. The sovereign’s duties include securing peace, administering justice consistently, establishing clear rules of property, determining punishment and reward, and protecting subjects from foreign threats. These duties are owed to God and natural reason rather than enforceable by subjects. Hobbes’s sovereign has a monopoly on lawmaking, judging, and enforcement. Rebellion is never justified because it returns society to the state of nature, which is worse than any form of government, however oppressive.

Liberty and Law

Hobbes reconciled liberty with law by distinguishing liberty from license. Liberty is the absence of external impediments to motion. Law restricts liberty for the sake of peace, but in the “silence of the law”—areas where the sovereign has not legislated—subjects enjoy full liberty. This includes economic freedom, choice of residence, freedom of contract, and all matters the sovereign has not regulated. Hobbes rejected the classical republican notion that liberty requires participation in self-government; for him, liberty is compatible with absolute monarchy so long as the law leaves subjects free to order their own affairs. The sovereign’s authority is absolute but not necessarily arbitrary; wise sovereigns govern through known, published laws applied equally.

Hobbes and the Common Law

Hobbes engaged in a notable debate with Sir Edward Coke about the nature of law. Coke argued that the common law embodied the accumulated wisdom of generations and that judges, through artificial reason, could determine law independently of the sovereign. Hobbes countered that law is the will of the sovereign, not the product of judicial reasoning. Without a sovereign to declare and enforce law, the common law would dissolve into the war of all against all. This debate between sovereignty and judicial independence, between command and reason, remains central to legal philosophy. Hobbes’s critique of Coke’s common law reasoning anticipated modern positivist critiques of judicial lawmaking.

Hobbes and Contract Theory

Hobbes’s account of the social contract differs from later contract theories in several significant respects. The Hobbesian contract is not a contract between rulers and subjects but a covenant among the multitude to authorize a sovereign. The sovereign is not a party to the contract and therefore cannot breach it. This means there is no right to rebellion except when the sovereign directly threatens the subjects’ lives. Hobbes also recognized that the contract must be enforceable—“covenants without the sword are but words.” This introduces the paradox that a contract to create a sovereign presupposes the power to enforce the contract, which only the sovereign can provide. Hobbes’s solution is that the fear of the sovereign’s power binds subjects to their covenants. This analysis of the preconditions of contractual obligation anticipated modern game-theoretic accounts of cooperation and the problem of credible commitments.

The Laws of Nature

Hobbes’s account of the laws of nature differs significantly from the natural law tradition. For Hobbes, the laws of nature are not independent moral standards but theorems of reason concerning what conduces to self-preservation. They are discoverable by reason and oblige in foro interno (in the internal forum of conscience) but not always in foro externo (in external action)—we must be willing to follow them when security permits, but we need not follow them when others do not. This instrumental account of natural law reduces it to prudence rather than morality, paving the way for the positivist separation of law and morality.

Legacy

Hobbes is regarded as a father of legal positivism. His command theory directly influenced John Austin’s jurisprudence and the analytical tradition. His social contract theory shaped the work of Locke, Rousseau, and Kant, establishing the framework for modern political philosophy. Modern international relations theory, particularly political realism, draws on Hobbesian premises about the state of nature among nations. The Hobbesian problem—how to create binding legal order in a world of competing interests and conflicting values—remains central to jurisprudence and political philosophy. His insistence that law is a human artifact, created by human will for human purposes, permanently transformed legal thought.