are the result of a sort of miracle that took place 250 years ago.

That miracle is called the Enlightenment, a moment in history when philosophers suddenly

overthrew religious dogma and tradition and replaced it with human reason.

Harvard professor Steven Pinker puts it this way: “Progress is a gift of the ideals of

the Enlightenment.”

There's just one problem with this claim.

It isn't really true.

Consider the U.S. Constitution, which is frequently said to be a product of Enlightenment thought.

But you only need to read about English common law—which Alexander Hamilton and James Madison

certainly did—to see that this isn't so.

Already in the 15th-century, the English jurist John Fortescue elaborated the theory of “checks

and balances,” due process, and the role of private property in securing individual

freedom and economic prosperity.

Similarly, the U.S. Bill of Rights has its sources in English common law of the 1600s.

Or consider modern science and medicine.

Long before the Enlightenment, tradition-bound English kings sponsored path-breaking scientific

institutions such as the Royal College of Physicians, founded in 1518, and the Royal

Society of London, founded in 1660.

The truth is that statesmen and philosophers, especially in England and the Netherlands,

articulated the principles of free government centuries before America was founded.

So why give the Enlightenment all the credit?

Apparently because it doesn't look good to admit that the best and most important

parts of modernity were given to us by individuals who nearly all held conservative religious

and political beliefs.

The claim that all good things come from the Enlightenment is most closely associated with

the late-18th-century German philosopher, Immanuel Kant.

For Kant, reason is universal, infallible, and independent of experience.

His extraordinarily dogmatic philosophy insisted that there can be only one correct answer

to every question in science, morality and politics.

And that to reach the one correct answer, mankind had to free itself from the chains

of the past—that is, from history, tradition and experience.

But this Enlightenment view is not only wrong, it's dangerous.

Human reason, when cut loose from the constraints imposed by history, tradition and experience,

produces a lot of crazy notions.

The abstract Enlightenment philosophy of Jean Jacques Rousseau is a good example.

It quickly pulled down the French state, leading to the French Revolution, the Reign of Terror,

and the Napoleonic Wars.

Millions died as Napoleon's armies sought to rebuild every government in Europe in light

of the one correct political theory he believed was permitted by Enlightenment philosophy.

Today's cheerleaders for the Enlightenment tend to skip this part of the story.

They also pass over the fact that the father of communism, Karl Marx, saw himself as promoting

universal reason as well.

His new “science” of economics ended up killing tens of millions of people in the

20th century.

So did the supposedly scientific race theories of the Nazis.

The greatest catastrophes of modernity were engineered by individuals who claimed to be

exercising reason.

In contrast, most of the progress we've made comes from conservative traditions openly

skeptical of human reason.

The Enlightenment's critics, including John Selden, David

Hume, Adam Smith, and Edmund Burke, emphasized the unreliability of “abstract reasoning”

and urged us to stick close to custom, history, and experience in all things.

Which brings us to the heart of what's wrong with today's idolization of the Enlightenment.

Its leading figures were not skeptics open to what history and experience might teach us.

Their aim was to create their own system of supposedly infallible truths independent of

experience.

And in that pursuit, they were as rigid as the most dogmatic medievals.

Anglo-Scottish conservatives had a very different goal.

They defended national and religious tradition, even as they cultivated what they called a

“moderate skepticism”—a combination that became known as “common sense.”

I think a lot about common sense these days, as I see American and European elites clamoring

for “Enlightenment Now.”

They rush to embrace every fashionable new “ism”—socialism, feminism, environmentalism,

and so on—declaring them to be universal certainties and the only “politically correct”

way of thinking.

They display contempt towards those who won't embrace their dogmas, branding them “unenlightened,”

“illiberal,” “deplorable,” and worse.

But these new dogmas deserve to be greeted with some of that old Anglo-Scottish skepticism.

Enlightenment overconfidence in reason has led us badly astray too many times.

I'm Yoram Hazony, author of The Virtue of Nationalism, for Prager University.