John Locke
Quotes & Wisdom
John Locke: The Philosopher Who Rewired the Western Mind
Before John Locke, kings ruled by divine right and knowledge was thought to be innate. After him, governments derived their authority from the consent of the governed, and the human mind began as a blank slate written upon by experience alone. Born in 1632 in Somerset, England, Locke was a physician, political theorist, and philosopher whose ideas became the intellectual foundations of liberal democracy, empiricism, and modern conceptions of human rights. The central tension of his life was the gap between the radical implications of his ideas and the cautious, anonymous manner in which he published them. His Two Treatises of Government and An Essay Concerning Human Understanding, both published in 1689, shaped the thinking of Thomas Jefferson, Voltaire, and the architects of the American and French revolutions. Locke remains, three centuries later, the philosopher whose fingerprints appear on every modern constitution.
Context & Background
John Locke was born on August 29, 1632, in Wrington, Somerset, a small village in the west of England. His father, also named John, was a country lawyer and small landowner who had served as a captain in the Parliamentary cavalry during the English Civil War. His mother, Agnes Keene, died during Locke's infancy, and he was raised primarily by his father, whose Puritan discipline and political connections would prove decisive in shaping the philosopher's career.
England in the mid-seventeenth century was a nation convulsed by revolution. The Civil War between Parliament and Crown, the execution of Charles I in 1649, the Cromwellian Commonwealth, and the eventual Restoration of Charles II in 1660 formed the political backdrop of Locke's formative years. These upheavals posed questions that would occupy him for the rest of his life: What gives a government legitimacy? What are the limits of political authority? When, if ever, are citizens justified in resisting their rulers?
Through the patronage of Alexander Popham, his father's commanding officer, Locke was admitted to Westminster School and then to Christ Church, Oxford. He found the traditional scholastic curriculum stifling and turned instead to the new experimental philosophy championed by Robert Boyle and the nascent Royal Society. He studied medicine, earning a bachelor's degree in the subject in 1674, and maintained a lifelong interest in the empirical investigation of the natural world. The intellectual atmosphere of Restoration Oxford - skeptical, experimental, politically charged - shaped the philosopher Locke would become.
The decisive event in Locke's intellectual life was his meeting in 1666 with Anthony Ashley Cooper, later the first Earl of Shaftesbury. Locke became Shaftesbury's personal physician, political advisor, and philosophical confidant. When Shaftesbury rose to become Lord Chancellor, Locke rose with him. When Shaftesbury fell and was driven into exile, Locke followed.
It was during the political crisis of the Exclusion Controversy - the attempt to prevent the Catholic James, Duke of York, from inheriting the throne - that Locke composed his Two Treatises of Government, though they would not be published until 1689, after the Glorious Revolution had vindicated many of his arguments. The First Treatise demolished the doctrine of the divine right of kings as articulated by Robert Filmer. The Second Treatise constructed a radically new theory of government.
Locke argued that in the 'state of nature' before government, all individuals possess natural rights to life, liberty, and property. Government is created by a social contract to protect these rights. When a government violates the trust placed in it by the people, the people have the right - indeed the obligation - to resist. 'Wherever law ends, tyranny begins,' he wrote, a principle that would echo through the American Declaration of Independence, drafted nearly a century later by Thomas Jefferson, who acknowledged Locke as one of his three greatest intellectual influences alongside Isaac Newton and Francis Bacon.
Locke's theory of property was equally influential. He argued that individuals acquire property by mixing their labor with the natural world - by cultivating land, for example, or harvesting resources. This labor theory of property provided a philosophical justification for private ownership that shaped both liberal capitalism and, through Karl Marx's critical engagement with it, socialist theory.
Locke's philosophical masterwork, An Essay Concerning Human Understanding, published in 1689 after nearly twenty years of development, launched a revolution in epistemology. Against the Cartesian doctrine that certain ideas are innate - stamped on the mind at birth by God - Locke argued that the mind begins as a tabula rasa, a blank slate. All knowledge derives from experience, either from sensation (our encounters with the external world) or reflection (our awareness of our own mental operations).
This empiricist thesis had radical implications. If knowledge comes only from experience, then no authority - religious, political, or intellectual - can claim privileged access to truth. Each individual must reason from evidence, test ideas against observation, and revise beliefs in light of new information. 'No man's knowledge here can go beyond his experience,' Locke declared, establishing the fundamental principle of empiricism that would be developed by David Hume and eventually influence the scientific method itself.
The Essay also contained a remarkably modern discussion of personal identity, arguing that the self is constituted by continuity of consciousness rather than by substance of the body or soul. This idea anticipated debates in philosophy of mind that continue to the present day.
Locke's commitment to individual reason led naturally to arguments for religious toleration. His Letter Concerning Toleration (1689) argued that the state has no business compelling religious belief, since genuine faith cannot be coerced. Churches are voluntary associations, and no denomination can claim a monopoly on truth. While Locke's toleration had limits - he excluded Catholics (whose loyalty to the Pope he considered a political threat) and atheists (whom he believed incapable of keeping oaths) - his arguments laid the groundwork for the separation of church and state enshrined in the American Constitution.
His Some Thoughts Concerning Education (1693) was equally forward-looking. Locke argued that education should develop the child's capacity for independent reasoning rather than merely transmitting received knowledge. He emphasized physical health, practical skills, and the cultivation of good habits over rote learning and corporal punishment. These ideas influenced educational reformers for centuries and prefigured modern progressive education.
Locke published his most important works anonymously or pseudonymously, and he remained evasive about his authorship even with close friends. This caution was not mere timidity - Locke had spent five years in exile in Holland, fleeing political persecution after Shaftesbury's fall. He understood firsthand the dangers of openly challenging established authority.
He never married and left no children, devoting his emotional life to a wide circle of friends and correspondents. His final years were spent at the Essex estate of Sir Francis and Lady Damaris Masham, the latter being a philosopher in her own right and a close intellectual companion. He died on October 28, 1704, at the age of seventy-two, as Lady Masham read to him from the Psalms.
Locke's influence is so pervasive that it is easy to underestimate. The ideas that government should protect individual rights, that knowledge requires evidence, that religious belief is a private matter, and that education should cultivate reasoning - these are now so widely accepted in liberal democracies that they seem self-evident. They were not. Each was a hard-won argument against entrenched authority, and each bears the stamp of a philosopher who combined radical thinking with the prudence to survive long enough to see his ideas change the world. Voltaire, who encountered Locke's philosophy during his exile in England, declared that 'no man ever had a more judicious or more methodical genius.' Three centuries later, the judgment stands.