Why a Diamond Is History and a Lump of Coal Isn’t
The Question That Split the Sciences
In 1894, the German philosopher Wilhelm Windelband (1848–1915) posed a deceptively simple question. Scientists discover universal laws — the law of gravity, the principles of chemistry. They explain what always happens. Historians, though, tell stories about one-of-a-kind individuals: Julius Caesar, the French Revolution, the Iliad. They care about the particular, the unrepeatable. Windelband asked whether history really is a science, too, and if it is, how it can give us genuine knowledge.
To answer, Windelband divided the sciences into two logical camps. Nomothetic sciences (from the Greek nomos, law) seek general laws. Physics and chemistry are nomothetic. Idiographic sciences (from idios, one’s own) want to grasp a unique individual in all its detail. History and literary study are idiographic. Both, he insisted, are legitimate. A physicist wants a formula that works for any falling object; a historian wants to understand the singular shape of a life like Caesar’s. The difference isn’t in their subject matter — the mind versus nature — but in their method and aim.
This was a rebellion. Many thinkers at the time believed that only law-finding natural science was truly objective. Windelband’s bold claim was that history was just as capable of truth. He and his allies — a group we now call the Neo-Kantians — didn’t invent this out of nothing. They returned to the philosopher Immanuel Kant (1724–1804) and built something new.
A Middle Path: Rules, Not Brains or Things
After Kant’s death, philosophers had veered in two extreme directions. Some built huge speculative systems (like Hegel’s), claiming to know the universe’s deepest secrets from an armchair. Others turned toward naturalism — the view that philosophy is just applied psychology, that thinking is nothing but brain processes. Both extremes, the Neo-Kantians felt, were dead ends.
They wanted a third way. The key was the transcendental method. Imagine a chess game. A psychologist might scan the players’ brains to see why they move a pawn. A naturalist might say chess is just physical pieces sliding. But a transcendental philosopher watches the moves and asks: “What rules make this game possible at all? What does a move have to be like to count as a valid chess move?” The philosopher isn’t interested in what’s happening in anyone’s head, only in the a priori conditions — the rules that must be in place for chess to exist.
Neo-Kantians applied this to human culture. Theoretical philosophy starts with the fact of science: physicists do successfully produce theories. History has the fact of meaningful narratives. Ethics has the fact that we hold actions to be good or bad. The job of philosophy is to dig out the hidden norms or laws that make these achievements objectively valid — true for everyone, not just for you or your tribe. They called these hidden rules a priori not because you are born with them, but because they are the logical scaffolding without which the whole building of knowledge collapses. And they insisted that this scaffolding is not something you find by studying the brain (psychologism, which they loathed), nor by dreaming up a supersensible world beyond experience.
The Table Isn’t a Copy: Marburg vs. Southwest on Objectivity
So what makes knowledge valid? The Neo-Kantians all agreed on a negative point: truth is never a copy. Think of the copy theory of knowledge: the idea that your mind is like a camera that faithfully mirrors the world outside. For the Neo-Kantians, that idea was a philosophical disaster. If knowing were just mirroring, you’d never know whether the mirror was accurate. You can’t stand outside your own mind to compare the picture with the unpictured thing.
Knowledge is an achievement, not a photocopy. Something in us must transform the raw buzz of sensory input into a claim that can be true or false. The two main Neo-Kantian schools, however, split over what the active ingredient is.
The Marburg School, led by Hermann Cohen (1842–1918) and later Ernst Cassirer (1874–1945), said that objectivity comes from lawfulness. A single glance at a table from your chair is just a private appearance. But when you understand how every possible view of the table relates to every other according to a stable law, you’ve moved from subjectivity to the objective table. The object is the law that unifies all appearances. Marburg philosophers even rejected the idea of a raw “given” that arrives before you think about it. For them, even basic perception is full of thinking; a point isn’t given, it’s generated.
The Southwest School, centered on Windelband and Heinrich Rickert (1863–1936), took a different route. They argued that objectivity comes from values. In knowing, you are always following a rule you ought to follow if you want to reach truth. The object is a transcendent ought — a demand that your judgment live up to a standard. Where Marburg saw the world as a system of laws, Southwest saw it as a network of norms. They also disagreed that intuition could be dissolved into concepts. For Southwest thinkers, there is an always‑present sensory “manifold” that concepts must shape but can never fully replace.
When Physics Changed Everything
The Neo-Kantians were not armchair dreamers; they followed science fiercely. Cohen had argued that modern electromagnetism — especially Michael Faraday’s concept of a field — proved that physical reality is not made of little billiard-ball atoms we can picture with our senses. The real world of physics is an ideal construction of pure mathematical relationships. Scientific progress, he thought, vindicates philosophical idealism: the idea that what we call an object is shaped by the concepts we bring.
Then came Einstein. Ernst Cassirer, Cohen’s most brilliant student, wrote Einstein’s Theory of Relativity in 1921. He showed that the theory didn’t destroy Kant’s idea of a priori principles; it just showed they are not fixed for all time. Einstein introduced new a priori rules — the constancy of the speed of light, the equivalence of gravity and acceleration — that make the physics of space, time, and matter possible. Our very concepts of substance and simultaneity were re‑made. Yet science did not collapse into chaos. Cassirer argued that through all these radical shifts, science remained objective because it follows permanent methodological demands: theories should be simple, broad in scope, and mathematically unified. The rules can change, but the goal of unity through lawfulness persists, like an asymptote that a curve forever approaches.
Heroes and Values: How History Became a Science
What about history? Rickert, expanding Windelband’s idea, gave the most complete Neo-Kantian answer. He asked: why is the diamond in a queen’s crown a historical object, while a routine lump of coal that powered a locomotive is not? Both are physically unique; both have a story. The difference, he argued, is that the diamond connects to widely shared values — beauty, power, national identity. The historian doesn’t just grab every fact; she selects those that are relevant to universal human values. That selection is what turns a bare event into a historical individual.
This was a brilliant way to answer the charge that history is just opinion. Historians, Rickert said, follow objective norms in forming their concepts. Caesar is a historical individual not because the historian likes him, but because his life is bound up with values like political order, military genius, and the story of a civilization — values any rational person can recognize as significant. That claim is bold: it says there are unconditionally general values that make historical knowledge possible. History, then, has its own kind of a priori: a framework of values that allows an idiographic science to be truly objective.
The Rules You Didn’t Know You Were Using
Neo-Kantianism faded as a movement, but its questions never went away. When you argue about whether a scientific theory reflects reality or is just a useful tool, you’re in their territory. When you ask whether history can escape bias or whether some events truly matter more than others, you’re echoing Windelband and Rickert. Their core insight — that knowledge always rests on hidden rules, not on a copy of the world — still shapes how philosophers think about objectivity, truth, and culture.
The movement left a generous gift: a way to see that the laws of physics and the story of a single diamond can both be knowledge, so long as we understand the different rules of the game. The diamond isn’t a law, but it is history — and that’s enough.
Think about it
- If you wrote a history of your own life, what would you include and what would you leave out? Who decides which events really matter?
- Can a scientific idea be true for everyone today, even if it’s replaced by a different idea a hundred years from now? How?
- Is the Koh‑i‑noor diamond more historically important than a lump of coal used to power a train, or does that depend on the values of your culture?
