Ask a lawyer where the rule of law comes from and, sooner or later, the answer is Magna Carta. The Great Charter, sealed by King John in a meadow at Runnymede in 1215, sits in the professional memory as the place it all began: due process, trial by one's peers, the idea that even a king answers to the law. Most of us carry that impression without having read a word of it.
Stephen Langton, the Archbishop of Canterbury, brokered the charter to wage peace between an unpopular king and a faction of rebel barons who had run out of patience with him. It promised the church its liberties, the barons protection from unlawful imprisonment, access to courts that would neither sell nor delay justice, and limits on what the crown could extract from its tenants, the whole arrangement policed by a council of 25 barons.
The Magna Carta failed. King John started maneuvering to void it almost immediately, and got his wish: Pope Innocent III annulled the charter by papal bull on August 24, roughly ten weeks after the wax was sealed. Neither side honored its commitments. England then collapsed into civil war. John died 16 months later, mid-war, of dysentery. As peace treaties go, it ranks below the ones that at least held through winter.
The text does not help the legend much either. Most of it is medieval housekeeping. One clause orders every fish weir ripped out of the Thames and the Medway. Another standardizes the measures of wine, ale, and corn across the kingdom. One protects widows from being forced to remarry. Even the way we cite it by clause number is a later invention: William Blackstone imposed the numbering in 1759, five and a half centuries after the fact.
That is because Runnymede was not a constitutional convention. It was a hostage negotiation. John was broke, freshly humiliated in France, and trusted by nobody who had ever lent him money or a castle. The barons had an army in London. The charter was the price of standing that army down, and John paid it the way a man pays a ransom, with every intention of getting it back.
And yet two of its provisions outlived all of that, and they still read like a charter of basic rights:
No free man shall be seized or imprisoned, or stripped of his rights or possessions, or outlawed or exiled, or deprived of his standing in any other way, nor will we proceed with force against him, or send others to do so, except by the lawful judgement of his equals or by the law of the land.
To no one will we sell, to no one deny or delay, right or justice.
