Locke

John Locke

John Locke had one radical idea, and he applied it to two different worlds, with consequences that are still unfolding around you. The idea was this: that nothing important about a human being is fixed at birth. We are not born, Locke argued, with our ideas already stamped into us, and we are not born under rulers already set over us. Both of these, our knowledge and our governments, are things we build, the first out of our own experience, the second out of our own consent. Put that way it does not sound incendiary, but it was. For it meant that no one is born knowing the truth and no one is born entitled to rule, that every mind starts as an equal and makes itself, and every legitimate government must earn its authority from free people who could just as well withdraw it. Locke took authority away from birth, from innate ideas and inherited thrones alike, and handed it to experience and to consent. That double move, the self-made mind and the self-governing people, is very nearly the operating system of the modern world, and it runs, in large part, on code that Locke wrote.

The white paper. Where do our ideas come from? The dominant answer of Locke's age was that some of them are innate, written into the mind by God before birth, the same in everyone: the basic truths of logic, of morality, the idea of God. Locke said no. The mind, he argued, comes into the world like a sheet of white paper, blank, with no ideas on it at all, and everything that later appears on the page is written there by experience. Watch a newborn, he says: it knows nothing; it learns. All the materials of our thought arrive through two doors, sensation, the input of the five senses, and reflection, the mind noticing its own operations, and out of these simple raw materials we build, by combining and comparing, every complex idea we have, from "gold" to "justice" to "infinity." This is empiricism, and its implications are enormous. If all knowledge comes from experience, then knowledge is not a fixed inheritance but something that grows, that can be tested against further experience, corrected and expanded, which is exactly the attitude that powers modern science. And if minds are made by experience rather than born unequal, then the differences between people are largely the work of education and circumstance, a thought that would feed every later movement for schooling, reform, and equality. Take away innate ideas, and the human mind becomes something that can be improved.

No one is born to rule. The same axe Locke took to innate ideas, he took to the divine right of kings. The reigning theory of his day held that kings rule by God's appointment, their authority handed down from Adam, and that subjects owe them obedience as children owe a father. Locke demolished it. There is no natural ruler, he argued; human beings are born free and equal, each the owner of his own life, his liberty, and the property he makes by his own labor. Government does not descend from heaven; it is built from the ground up, when free individuals agree to set up a common authority to protect the rights they already have. And here is the part that made the book dangerous and got it published anonymously: because government exists only to protect the people's rights, and holds its power only in trust from them, a government that turns predator, that attacks the very rights it was created to defend, breaks that trust and forfeits its authority. When that happens, the people have the right to resist it, to overthrow it and begin again. This was no abstraction for Locke; he wrote it amid plots and exile, to justify removing a king. And a century later, on another continent, men who had read him closely would echo his words almost exactly, declaring that governments derive their just powers from the consent of the governed, and that when a government becomes destructive of the rights to life and liberty, it is the right of the people to alter or abolish it. Locke wrote the founding charter of liberal democracy, and the revolutions came.

What your hands have made. One of Locke's natural rights deserves a closer look, because it shaped the modern economy and is still fought over: the right to property. In the state of nature, Locke asks, how does anything come to be mine? The earth was given to everyone in common; what entitles me to fence off a field and call it my own? His answer starts from a deceptively simple premise, that you own yourself, your own body and its labor. And so, he argues, when you take something from the common stock and mix your labor with it, when you till the soil, pick the apple, haul in the fish, you join something indisputably yours, your work, to it, and thereby make it your property. Labor is the title deed. It is an elegant and enormously influential idea: it grounds private property not in conquest or royal grant but in individual effort, and it became a cornerstone of liberal and capitalist thought. Locke attached a famous condition, that you may take only where there is "enough, and as good, left in common for others," a proviso of fairness his successors have argued over ever since, as the world's commons filled up and the "enough left over" ran short. But the core intuition, that what you have made by your own labor is rightfully yours, remains one of the deepest and most contested ideas in all of political economy.

A self made of memory. Two more Lockean ideas reach into our lives in quieter ways. The first is his startling answer to the question of what makes you the same person over time. Not your soul, Locke says, and not even your body, both of which you cannot really track and might in principle exchange. What makes you you is the continuity of your consciousness, the chain of memory linking the person who woke this morning to the child you once were and the person you will be tonight. You are, in effect, the story you can remember being. It is a strange and fertile idea, with puzzles built into it, what becomes of identity when memory fails, or splits, or is copied?, that still drives debates in philosophy, in law, and now in the ethics of artificial minds. The second idea is tolerance. The state, Locke argued, has authority over your life, your liberty, and your property, but none whatever over your soul; belief cannot be forced, and a magistrate who tries to compel religion has overstepped his entire purpose. Church and state belong to different realms and should be kept apart. His version had real limits, blind spots his own century could not see past, but the principle, that government has no business policing what you believe, became one of the load-bearing walls of every free society.

The water we swim in. The room holds Locke's two masterworks in full, the Essay on the mind and the Second Treatise on government, cited by book and section; between them they more or less drew the blueprint of the modern liberal mind. His influence is so total that it has become nearly invisible, the water we swim in. The empiricist program he launched ran on through Berkeley and Hume and into the whole tradition of science as tested experience; his liberalism became the common sense of the democratic world, its language of rights and consent and limited government now so familiar that we forget someone had to think it first. Locke is sometimes dismissed as the dull, sensible Englishman of the textbooks, all moderation and plain good sense. The moderation is real, but it is the moderation of a revolutionary, a man who calmly argued that minds are not born full, that kings are not born royal, and that authority of every kind must answer to the free judgment of equal individuals. Almost every assumption a modern democratic citizen holds without thinking, that you should believe things on evidence, that you are entitled to your own conscience, that no one is born your master, that a government serves you and not the reverse, was, three and a half centuries ago, a Lockean argument that someone had to make. He won so completely that we now mistake his conclusions for the obvious way of things.