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Knowledge 10

Bad Soil

The growth of human knowledge: the history of man’s progress and failures in the pursuit of knowledge

For a thousand years, the richest library in the world sat in a city at peace, in the hands of people who could read every word of it, and almost nothing new came out.

The city was Constantinople, and the people were the Byzantine Greeks. They were not barbarians. They were the direct heirs of Athens and Alexandria, the caretakers of the whole treasury of classical genius. They had Homer and Plato and Aristotle and Euclid and Galen on their shelves, in the original, and they could read them fluently while most of Western Europe had forgotten how to read at all. They copied the books. They studied the books. They wrote learned commentaries about the books. They kept the flame for ten centuries, through wars and sieges and the slow shrinking of their empire, and they were proud of it.

And in all that time, Edward Gibbon wrote, “not a single discovery was made to exalt the dignity or promote the happiness of mankind. Not a single idea has been added to the speculative systems of antiquity.” A thousand years. The greatest inherited library on earth. Full literacy. Relative peace. And, in Gibbon’s telling, not one new idea.

That is too hard on them, and it’s worth being fair. Byzantium was not literally barren. It threw a dome over Hagia Sophia that still stands, designed by two working mathematicians, one of whom wrote on the very conic sections the Greeks had puzzled over. It invented Greek fire, wrote real medical encyclopedias, had genuine flickers of revival. And it did one thing whose value is almost impossible to overstate: it kept the classical books alive and eventually handed them to Italy, where they lit the Renaissance. So the honest charge is not that a thousand years produced nothing. It is that a thousand years, holding the greatest library and the deepest leisure on earth, produced so stunningly little of its own, and that its rare triumphs were mostly practical or preservative while the great speculative systems sat exactly where the ancients had left them. That underperformance, not some literal zero, is the thing that needs explaining.

Gibbon gave a reason, and it is the reason this whole essay turns on. The Byzantines underperformed, he thought, because they were comfortable. “Alone in the universe, the self-satisfied pride of the Greeks was not disturbed by the comparison of foreign merit; and it is no wonder if they fainted in the race, since they had neither competitors to urge their speed, nor judges to crown their victory.” They had everything you would put on a list of the conditions for great thought. They were just missing the one thing that isn’t on the list.

The list everyone would write

If I asked you to design a civilization that would advance human knowledge as fast as possible, you would know what to put in it, and you would be in good company. You would want peace, so that minds are free to think instead of fighting. You would want prosperity, so that some people can be spared from the fields to sit and study. You would want great libraries and universal literacy, so that every discovery is preserved and every thinker can stand on the last one. You would want generous funding, so that talent isn’t wasted scraping for rent. You would want stable, respected institutions where scholars can work in security. And you would want a shared body of settled knowledge that everyone is trained in, so that people aren’t forever re-arguing the basics.

This is not a foolish list. Every item on it is real. A society with no leisure at all produces no science, because everyone is too busy surviving. A society that loses its books does have to start over. Thomas Hobbes put the sane core of it in one line: “Leisure is the mother of philosophy; and Commonwealth, the mother of peace and leisure.” You need the calm. You need the free hours. Nobody discovers the laws of motion while running from a fire. Hobbes went further than that, and here the essay parts company with him: he thought the great peaceful empires, not the anxious little rival cities, were the true birthplace of philosophy. On where the spark actually comes from, this essay sides with Gibbon and Tocqueville against him. But on the necessity of leisure, he is plainly right, and that concession matters, because it is what makes the rest of the argument bite.

So the list is half right, and that is exactly what makes it dangerous. Because Byzantium had every single item on it. It had the peace, the prosperity, the libraries, the literacy, the stable institutions, and a shared body of settled knowledge so complete and so revered that touching it felt like vandalism. It had the whole list, for a thousand years, and it produced almost nothing of its own. Which means the list is missing something, and the missing thing matters more than everything on it.

The missing thing is a fight

Gibbon’s word for it was a race. The Byzantines “fainted in the race,” he said, because they had “neither competitors to urge their speed, nor judges to crown their victory.” The thing they lacked was a race. A rival. Somebody across the way doing it better, whom you had to beat. Somebody keeping score.

This is the uncomfortable heart of the matter, and it needs stating carefully, because the easy version of it is wrong. The easy version says knowledge grows out of hardship, that struggle and danger are what sharpen the mind. That can’t be right, because a society with no leisure at all discovers nothing; the starving and the hunted do not do physics. Hobbes was correct that leisure is the mother of philosophy. Byzantium had leisure in abundance. So leisure is not the missing thing either.

The missing thing sits on top of leisure. It is the spur that keeps a leisured people from going slack: a rival, a scoreboard, a reason not to coast. The societies that actually produced great thought had both halves. Periclean Athens was rich and idle enough to spare men for pure thought, funded by an empire’s tribute, and at the same time it was packed among dozens of quarrelsome rival cities, each watching the others, each afraid of falling behind, forever measuring itself against Sparta and Persia and its own past. Leisure gave it the free hours; rivalry gave it the reason to use them for something new. Byzantium kept the leisure and lost the rivalry, and the leisure alone just turned into a very comfortable, very literate sleep.

Once you separate the two, the whole comfortable list starts to look less like a set of nutrients and more like a set of sedatives with one stimulant accidentally left out. Peace can be a sedative. Prosperity can be a sedative. Consensus, the shared settled knowledge everyone is trained in, can be the strongest sedative of all, because you cannot discover what everyone already agrees is true. Each of these things is genuinely good, and each of them, without a rival to fight, quietly puts the mind to sleep. The reason Byzantium underperformed is not that it was too poor or too ignorant or too troubled. It failed because nothing was chasing it.

The poison of good government

Gibbon saw the same pattern in the fall of Rome itself, and he stated it in a way that should make anyone who runs a stable, well-managed institution nervous.

The Roman Empire under the good emperors of the second century was, by the ordinary measures, a triumph: vast, peaceful, prosperous, well-governed, united under a single wise administration from Britain to the Euphrates. It is the closest the ancient world came to the comfortable list. And Gibbon believed it was killing the Roman mind. “This long peace, and the uniform government of the Romans,” he wrote, “introduced a slow and secret poison into the vitals of the empire,” until “the fire of genius was extinguished, and even the military spirit evaporated.” The very success of the government, its calm and its uniformity, was the poison. There was nothing to push against. One benevolent order stretched to the horizon, and under it the striving died.

Gibbon then said the part that is genuinely hard to swallow. What eventually revived the European mind, in his telling, was not more peace and more order but their violent opposite: the barbarian invasions that tore the uniform empire apart. “The fierce giants of the north broke in, and mended the puny breed. They restored a manly spirit of freedom; and after the revolution of ten centuries, freedom became the happy parent of taste and science.”

Take that carefully, because Gibbon is overstating it and it would be dishonest to pretend otherwise. The centuries right after the invasions were not a golden age of discovery; they were mostly a wreck. And the Antonine peace he calls a poison was also the age of Ptolemy and Galen, whose books ruled astronomy and medicine for the next fourteen hundred years, so the “fire of genius” plainly was not out. That those same books then ruled unchallenged and unimproved for fourteen centuries is a separate matter, and the concern of the other essays in this series; here they only show that comfort had not emptied the age of genius. Gibbon is a moralist reaching for a dramatic contrast, and the literal claim is far too strong. But strip off the drama and a real, uncomfortable point is left standing, and it is the same point Byzantium made: a single uniform order, with no rival anywhere in view, tends to remove the thing that makes minds strive. Break the monopoly, introduce a dozen rival centers each trying to outdo the others, and thought tends to come back to life. It was never the barbarism that helped. It was the end of the comfortable, unrivaled, self-satisfied monopoly.

Money makes it worse

You might think that at least funding is safe, that whatever else is true, giving smart people secure resources to think can only help. It is one of the most reasonable-sounding items on the list. And it is one of the most treacherous.

Adam Smith, who spent his life inside universities, said so plainly, and he was not being flip. The best-funded, most prestigious universities, he found, were not the leaders in new knowledge. They were the laggards. “In general,” he wrote, “the richest and best endowed universities have been the slowest in adopting those improvements, and the most averse to permit any considerable change in the established plan of education.” Worse than slow: they became hiding places for ideas that had already been proven wrong everywhere else. Several of these grand endowed institutions, Smith wrote, “have chosen to remain, for a long time, the sanctuaries in which exploded systems and obsolete prejudices found shelter and protection after they had been hunted out of every other corner of the world.”

An exploded system, a theory the working scientists have already abandoned, needs somewhere to survive. Where does it go? Not to the struggling outsider who has to be right or starve. It goes to the richest institution, the one with the secure endowment, the one that never has to justify itself to anyone. Money did not buy truth. Money bought the freedom to keep being wrong in comfort. The endowment that was supposed to protect the pursuit of knowledge protected its corpse instead.

This was, like Bacon’s audit in the last essay, a snapshot Smith mistook for a law. The richest universities today are not the laggards; they are mostly the leaders. But look at why, and the point survives intact. The modern research university is rich and innovative at once because it is savagely competitive, for grants, for rankings, for talent, lab against rival lab. It innovates in spite of its endowment, driven by exactly the rivalry Byzantium lacked. Secure money still tends, all on its own, toward sheltering the comfortable error; it takes a permanent race to keep that tendency from winning.

Johannes Kepler, who did his revolutionary work mostly outside the comfortable institutions, put his finger on the mechanism. In schools, he wrote, “because it is a question of the progress of the students, it frequently happens that the things which have to be chosen are not those which are most true but those which are most easy.” A settled, well-funded teaching institution has a job, and the job is to move students smoothly through a curriculum. That job rewards what is easy to teach and agreed upon, not what is true and unsettled. The comfort of the institution and the discovery of new truth are quietly pulling in opposite directions.

The engine nobody wants to name

The strangest version of this comes from Alexis de Tocqueville, who admired democracy more than almost anyone and still could not avoid seeing it.

Tocqueville asked which kind of society actually produces pure, deep, disinterested science, the kind that chases a truth for its own sake with no application in view. His answer was not the free and equal one he loved. It was the unequal one. “The permanent inequality of lot,” he wrote, “leads men to confine themselves to the proud and sterile search for abstract truths, while the institutions of democratic society tend to make them look only for the immediate practical applications of science.” A rigid aristocracy produces a class of people with leisure, security, and nothing they are forced to do, and some of them turn that restless idleness toward the deepest and most useless questions there are. A free, busy, striving democracy, by contrast, keeps pulling the mind back down to what pays, to the next useful gadget, to the application instead of the theory.

This is deeply uncomfortable, and Tocqueville meant it to be. The leisure that funds the purest thought has, through most of history, been somebody’s inherited privilege, bought by somebody else’s forced labor. That is not a defense of aristocracy; Tocqueville is not saying we should bring back inequality to get better physics. He is saying something harder: that the free, equal, comfortable, application-hungry society we would all choose to live in is not automatically the one that produces the deepest knowledge, and that if such a society wants pure science, it has to deliberately build the strange conditions that inequality used to supply by accident. It has to protect useless thought on purpose, because nothing in a comfortable democracy will protect it by default.

And the sequel proved him exactly half wrong, in the most instructive way. The democracies did not starve pure science; they went on to produce more of it than any aristocracy ever dreamed of. But they did it by doing the deliberate thing Tocqueville implied they never would, building universities and academies and public funds whose whole job was to shelter useless, applicationless inquiry on purpose. They proved his mechanism right by having to fight it. Left alone, the democratic pull toward the practical is real; it just turned out to be a pull you can counteract, if you decide to.

And then Tocqueville gave the warning that should end any complacency about our own comfortable age. A civilization does not lose its science only when barbarians burn it down. It can lose it while every outward sign looks fine. Describing a society in decline, he wrote that “the greater part of its scientific methods were still in use, but science itself was dead.” The formulas still worked. The techniques were still applied. The engineers still engineered. But the living thing that had produced all of it, the restless, rivalrous, useless-truth-chasing thing, had quietly gone out, and for a while nobody noticed because the machines kept running. “Some peoples,” Tocqueville wrote, “may let the torch be snatched from their hands, but others stamp it out themselves.” You do not need an enemy. Comfort will do it.

Comfort is not the enemy; sleep is

It would be easy to twist all of this into a crude slogan: comfort kills, hardship saves, suffer if you want to think. That slogan is false, and the biggest cases break it. The Pax Romana that Gibbon called a slow poison is the same peaceful, prosperous, well-governed empire that produced Ptolemy and Galen, whose books ruled astronomy and medicine for fourteen hundred years. The rich, safe Dutch Republic had a scientific golden age. The comfortable, lavishly funded United States after 1945 ran the greatest burst of discovery in human history. Comfort obviously does not, by itself, put the mind to sleep.

What puts the mind to sleep is comfort with nothing chasing it. And the thing chasing it can sit quite happily inside the comfort. The clearest case in living memory is the race to the moon: two rich superpowers, spending money like water in conditions of total physical safety for the scientists involved, and driven by a rivalry so fierce that a decade of it produced more than the previous century. That was every item on the comfortable list, plus the one thing Byzantium never had, a rival across the water, keeping score. The lesson is not to burn the library or tear down the peace. It is that peace and money and books buy you the capacity to think and supply exactly none of the reason to, and that a society with all the capacity and no reason will do precisely what Byzantium did with it, which is very little.

Back to the library that produced almost nothing

Return to Constantinople, to the scholars in the greatest library in the world, copying Plato in a beautiful hand, at peace, well-fed, secure, agreeing with each other, adding almost nothing of their own.

We started by pitying them for what they lacked, and the instinct was to reach for the list: maybe they needed more resources, more freedom, more books, more schools. But they had all of that. They had more of it than almost anyone before them. What they were missing was not on the list at all, because it is the one thing no one wants to write down as a requirement. They had no rival to fear, no upstart gaining on them, no judge keeping score, no one across the water doing it better. They had everything except a reason to bother. And so, holding the richest inheritance in human history, they fainted in a race that no longer had any other runners.

The conditions that grow knowledge are not the ones we would choose for ourselves. Given the choice, every one of us picks the comfortable list: peace, security, plenty, agreement, a quiet room and no one breathing down our neck. That is the environment we would build for our own minds and our own institutions if we could. It is also, minus one rival across the water, exactly the environment in which the Byzantine Greeks read the greatest books ever written for a thousand years and found almost nothing of their own to add.

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