I have a simple, possibly impolite thesis: the “nation” is a beautiful story we tell to coordinate strangers, and loud nationalism is what people reach for when the story stops paying their bills. Nations are not ancient tribes waking from deep time; they are recent inventions—clever ones—that industrial print, schools, and armies stitched together so we would feel kinship with people we will never meet. That is not an insult; it is the compliment of realism. As Benedict Anderson wrote, nations are “imagined communities,” and as Hobsbawm showed, a great many “traditions” are quite modern habits pretending to be medieval. When you know this, some things that looked like eternal truths begin to look like policy choices—and reversible ones.
Why, then, do people so often hate immigrants? Because the human brain is a panicky accountant. It counts losses loudly and gains quietly. It also counts badly. Across democracies, voters wildly overestimate how many immigrants there are and how “different” they are, and these misperceptions drive fear far more than the facts do. When researchers correct the numbers, anxiety drops; when people actually meet and work with newcomers under fair conditions, prejudice falls further. None of this is magic—it is measurement and contact. The math problem can be fixed with information; the trust problem can be fixed with structured cooperation. The evidence has been stable for years, which is both reassuring and, given our politics, a little depressing.
Meanwhile history keeps heckling the pessimists. The Roman Republic and Empire grew not by guarding purity but by selling belonging. At first, citizenship was scarce; by 212 CE, Caracalla granted it to essentially all free people in the empire. Rome did not dissolve in a soup of foreigners; it ran for centuries on the fuel of new citizens paying taxes, serving in legions, and dreaming Roman dreams. The empire’s problem was not “too many outsiders”; it was what every empire eventually faces—overstretch, succession, plague, and a few fiscal habits that would make a modern auditor faint.
The Persian Achaemenids offer a different lesson: don’t erase, federate. Cyrus and his successors ruled a continent by letting people keep their languages, gods, and local laws, provided the roads stayed safe and the taxes arrived on time. Tolerance here was not humanitarian branding; it was an operating system that made diversity productive. When you respect local elites and sanctuaries, you collect revenue instead of uprisings. If this sounds unromantic, good—prosperity usually is.
Or consider the Dutch Republic. It became a magnet for refugees—Sephardic Jews, French Huguenots, skilled migrants—who brought networks, capital, and know-how the way people now bring laptops. The payoff was a golden age of trade, science, and art. Was the Netherlands perfectly tolerant? No. Was it tolerant enough to turn immigration into comparative advantage? Very much yes.
So why does harsh nationalism keep returning? Because when a state stops delivering, somebody needs a scapegoat, and foreigners are the oldest technology in that category. The rhetoric promises dignity without reform: no need to fix schools, courts, or the tax code; simply tighten borders and sing louder. It is politics as placebo. And like many placebos, it can make you feel briefly better while your actual condition quietly worsens.
I am not arguing for borderlessness or for naïve optimism about integration. I am arguing against the superstition that sameness is strength. The historical record reads the other way: polities that turn strangers into stakeholders tend to last longer and get richer; polities that worship homogeneity tend to shrink, sulk, and eventually ask for loans. The nation, at its best, is a coalition of the willing—renewed by each newcomer who decides the story is persuasive and the rules are fair.
If this sounds unpatriotic, let me try again. Love your country like an engineer loves a bridge: by checking the stress points and adding load-bearing members when traffic increases. Immigration is load. It is also, properly harnessed, load-bearing. Rome learned this with citizenship; Persia with autonomy; the Dutch with refuge and credit. Modern research just gives their old pragmatism a footnote: our fears are statistically illiterate, and our prejudices are reversible with contact. That may not be a stirring anthem, but it builds better cities than any anthem I know.
In short: nations are stories we maintain together. The strong ones edit bravely and recruit new authors. The failing ones clutch the first draft and blame the readers.
