Core Thesis
Legitimate political authority derives exclusively from the consent of the governed, established through a social contract designed to protect natural rights (life, liberty, and property); when a government violates this trust, the people retain the right to dissolve it.
Key Themes
- The State of Nature vs. The State of War: Locke distinguishes the pre-political state (a state of perfect freedom governed by reason) from a state of war (force without right), arguing that government is a remedy for the instability of the former, not an escape from the brutality of the latter.
- Labor Theory of Property: Property is a natural right derived from the mixing of one's labor with the common resources of nature, preceding the existence of the state.
- Consent of the Governed: Political power is only valid when derived from the voluntary agreement of free individuals, rejecting the Divine Right of Kings.
- The Right to Revolution: The people act as the final check on power; if the legislature or executive violates the laws of nature or trust of the people, the social contract is voided.
- Separation of Powers: To prevent tyranny, the power to make laws (legislative) must be distinct from the power to enforce them (executive/federative).
Skeleton of Thought
The text is structured as a demolition job followed by a reconstruction. It begins by dismantling the Patriarcha—the theoretical defense of the Divine Right of Kings—before erecting a new architecture of liberal constitutionalism based on natural law.
The Demolition (First Treatise): Locke first targets the premise that political authority flows from Adam via primogeniture. By dissecting biblical scripture, he demonstrates that even if Adam had absolute power (which he disputes), no modern monarch could prove direct lineage. This strips the monarchy of its theological armor, clearing the ground for a secular theory of statehood.
The Foundation (Second Treatise): Starting from a hypothetical pre-political "State of Nature," Locke posits that humans are naturally free and rational, not chaotic beasts. In this state, everyone has the right to enforce the law of nature. However, this creates "inconveniences"—bias and lack of impartiality in enforcing justice. To secure property (broadly defined as life, liberty, and estate), men enter into a Social Contract.
The Structure of Authority: The logic builds toward the definition of the Commonwealth. The supreme power is the Legislative, but it is bound by the laws of nature and the public good. Crucially, Locke constructs a fiduciary relationship: the government acts as a trustee. If the trustee betrays the grantor (the people) by acting arbitrarily or seizing property without consent, the logic loops back to the beginning: the people revert to the State of Nature, justified in exercising their "Appeal to Heaven" (revolution).
Notable Arguments & Insights
- Labor as Property: In a radical departure from feudal thought, Locke argues that a man owns his body and therefore the labor of his body. If he mixes that labor with nature (e.g., picking apples or tilling soil), the product becomes his property. This excludes others only insofar as there is "enough, and as good left in common for others."
- The "Appeal to Heaven": Locke frames revolution not as a crime, but as a lawful response to tyranny. When there is no judge on earth to appeal to, the people must appeal to a higher power (God/Nature) through force of arms.
- The Difference Between Paternal and Political Power: Locke rigorously separates the power a father has over a child (which is temporary and educational) from the power a magistrate has over a citizen (which is based on equality and law).
- Taxation Requires Consent: A critical precedent for modern democracy; the executive cannot take a man’s property (taxes) without the express consent of the majority through their representatives in the legislature.
Cultural Impact
- Blueprint for the American Revolution: Thomas Jefferson’s Declaration of Independence is essentially a summarization of Locke’s Second Treatise, echoing the rights of "Life, Liberty, and the pursuit of Happiness" and the right to abolish destructive governments.
- Foundation of Liberalism: It established the intellectual bedrock for constitutional democracy, limited government, and the rule of law in the Western world.
- Economic Theory: The "labor theory of property" influenced classical economics, particularly Adam Smith, while later becoming a pivot point for Marxist critiques of value.
Connections to Other Works
- Leviathan by Thomas Hobbes (1651): The primary counterpoint. Hobbes argues the State of Nature is a war of "all against all" requiring an absolute sovereign; Locke argues it is a state of reason requiring a limited sovereign.
- Patriarcha by Sir Robert Filmer (1680): The direct target of Locke's First Treatise; defends the divine right of kings as an extension of Adam's fatherhood.
- The Social Contract by Jean-Jacques Rousseau (1762): Develops the Lockean contract further, exploring the "General Will" and the tension between the state and the individual.
- The Federalist Papers (1787–88): A practical application of Lockean principles regarding faction, rights, and the structure of government.
One-Line Essence
A government that fails to protect the natural rights of its citizens forfeits its legitimacy and invites its own dissolution.