Left and Right Grew from the Same Root

We live downstream of ideas. All of us do, shaped by them before we're old enough to recognize them as ideas at all. The two sides of American politics are downstream of the same one.

Ideas shape our families, our churches, our laws, our institutions, our nation. Behind the moral confusion of the moment is an idea, and behind that idea is another one, older still. These ideas have origins. They don't simply appear.

Every consequential idea about God, man, morality, authority, freedom, justice, government, sex, economics, or human nature rests on some understanding of reality. And there are ultimately only two sources for it: God's truth, or rebellion against God's truth.

Go back to the Garden. God establishes a moral reality. Of the tree of the knowledge of good and evil, “of it ye shall not eat, but in whatsoever day ye eat of it, ye shall surely die” (Gen. 2:17). The serpent first denies it outright: “Ye shall not surely die” (Gen. 3:4). Then comes the move that does the real work, a promise that keeps half the truth:

Part of that came true. “The eyes of both were opened” (Gen. 3:7), and God Himself said that Adam “is become as one of us, to know good and evil” (Gen. 3:22). What the serpent left out was the death. Man believed the half that was true and died of the half that was missing.

That pattern repeats. God establishes authority; man turns authority into abuse, or rejects it outright. God gives sexuality; man turns it into self-definition. God makes them male and female; man says sex is whatever the individual decides. Truth is revealed. Truth is rejected. Truth is twisted. And eventually the distortion becomes an entire worldview, one convincing enough that the generation living inside it forgets it was ever a twist at all.

The most effective distortions were never the ones that sound obviously false. They're the ones that keep enough truth intact to sound plausible. A lie doesn't have to be entirely false to do its work. It only has to corrupt the truth it's standing on.

Which is why every idea gets the same three questions, asked in order, every time:

Ideas have origins. Ideas have consequences. And ideas have destinations. Understanding the world, and the ideas already shaping the people in it, means learning to trace them back to their roots.

Most people assume ideas are the soft part, that what actually moves the world is money, armies, technology, whoever holds power. That has it backward. Every one of those is aimed by an idea first.

Richard Weaver said it in three words and made them the title of his 1948 book, written just after a civilization had torn itself apart:

Weaver didn't blame the weapons. He traced the wreckage to a philosophical decision made in the fourteenth century by William of Ockham, the same figure this thesis traces below.

Take a man who argued the opposite. Marx held that history is driven by material conditions, who owns what, and that ideas follow from them. Here's how he opened the most consequential pamphlet of the last two centuries:

Marx himself granted more than that sentence allows. Four years earlier he had written that “theory also becomes a material force as soon as it has gripped the masses.” The movement built on his theory ran the twentieth century harder than any army did, and it ran on a theory.

One layer down, the legal theorist Carl Schmitt asked where the big political concepts came from, the sovereign, the emergency, the lawgiver whose word is final:

Weaver traced a civilization's wreckage to an idea. Schmitt traced the modern state to theology. Marx, who denied that ideas drive history, admitted that his own theory had to grip the masses before it could move anything. Whatever sits on the surface, an idea is underneath it, steering. The man who never examines his own ideas isn't free of them. He's being driven by someone else's. That's the reason to trace them. Not for a history lesson. To find out who's holding the wheel.

Ideas develop. One generation pushes an idea a step further and hands a slightly different version to the next. Each step below is a real argument made by a named man, and none of them was forced. Each one took the step before it as settled. Here are two worked examples.

Example one: “All men are created equal”

Scripture teaches that men are equal in one sense. Every man is made “according to the image of God” (Gen. 1:27), and every man will answer to Him. Scripture does not teach that men are equal in a second sense, that no man is born under another’s authority. A son is born under his father. The second sense is the one the American founding built on, and it is where the twist sits. Follow it one step at a time.

The conservative case against equity usually begins at step four or five. Steps two and three are the Declaration’s own language, and conservatives defend them as the founding. But step five is step two carried to its end. The question isn’t where equity went wrong. It’s where equality changed meaning, and that happened at step two, long before anyone said “equity.”

Example two: from Ockham to today

This one runs longer: five steps, roughly seven hundred years, one idea pushed a little further at each stop.

None of this dropped out of the sky. It started with an argument about universals seven hundred years ago. That’s a genealogy of ideas, and once you can see it, modern arguments stop looking random. They start looking like branches growing from roots.

This site uses one word more than any other, so we define it before we rely on it. Liberal does not mean Democrat, and it does not mean the left. Liberalism is the belief that men are born free and equal, so that no one has authority over another except by his consent. Locke stated it. The Declaration adopted it. Both American parties defend it.

The progressive carries it forward. If men are born free and equal, every remaining distinction, between husband and wife, between man and woman, between citizen and stranger, has to justify itself or go. The conservative carries it back, to 1776 and the Constitution, to the founders’ version of the same premise. One wants to finish the project. The other wants to stop it at an earlier step. That’s a real disagreement, but it’s a family argument, inside one house.

This is why conservatives keep losing ground they were sure they held. A man who accepts step two has no argument left against step five except that it goes too far, and “too far” moves.

Behind a policy is an idea. Behind that idea is an assumption about human nature. Behind that is an idea about morality, authority, freedom, or God Himself, and most of us have never followed those roots very far. We’re handed the fruit: a slogan, a label, a side to pick.

But the map we’re handed is usually one line:

One axis can’t hold the real range of positions, because it crushes two questions into one. The first is who owns: should property be held in common, or by families and persons? The second is where authority comes from: is it given from above, by God through fathers, pastors and kings, or does it rise from below, from the consent of the people? Split the line into those two axes and four corners appear.

The one-line map can describe Communist against Liberal, the two corners on its diagonal. It has no place for the other two. And the corner it hides completely is the one where authority comes from above and property stays with families, the corner Christian kingdoms stood in for most of their history. Both American parties sit in the bottom half. They argue about ownership and about how far consent reaches. Neither questions where authority comes from.

See the two-axis mapTake the quiz

And the map moves. In 1996, the Defense of Marriage Act passed the House 342–67 and the Senate 85–14, defining marriage federally as the union of a man and a woman, signed by a Democratic president. Nineteen years later, Obergefell v. Hodges made same-sex marriage the law in all fifty states. Same question, one generation.

It isn’t only the left that moves. In 2016, the Republican platform called traditional marriage, “based on marriage between one man and one woman,” the foundation for a free society and condemned Obergefell. The 2024 platform dropped both.

A federal law kept sports betting illegal outside Nevada from 1992 until the Supreme Court struck it down in 2018, and it’s legal in nearly forty states today. Eight years.

That’s the Overton window: an idea nobody will say, then a few say it, then it’s tolerated, defended, adopted, normal, and the next generation asks why the last one was so extreme. You can’t understand political change by asking only what the left believes or what the right believes, because both answers keep moving, and both start from the same premise. The map itself is what needs redrawing.

This isn’t only theory. Some of the ideas governing your own thinking were never consciously chosen, inherited from school, television, family, church, political tribe. Some are biblical. Some are true without being uniquely Christian. Some are opposed to the Christian understanding of reality outright, wearing a convincing enough mask that most people never think to ask.

We aren’t offering a new idea. The way out of a twist is back to the truth it twisted, the old paths Christian homes, churches and kingdoms walked before liberalism taught every man that he belongs to himself.

That return is practical, and it happens in four places: in a man himself, in his home, in his church, and in what he asks of rulers. If Christ is Lord of all, He is Lord over every one of them, and every idea in them gets the same three questions: where did this come from, what truth has been twisted to produce it, and where does it lead.