March 14

The last hundred and forty years of physics fit, almost too neatly, between the two ends of a single date. On March 14, 1879, Albert Einstein was born in Ulm, the German-American physicist who would dismantle the Newtonian universe and replace it with curved spacetime and a speed that nothing could exceed. On March 14, 2018, Stephen Hawking died — the English physicist and author who had spent his career at the precise edge Einstein’s work had opened, mapping the behavior of black holes, speculating on the origins of time, writing the most widely purchased unread book in history. Birth and death, one date, one lineage. The calendar did not plan this. That is, of course, the point.

March 14 carries this coincidence without announcing it. The date moves through history gathering other things entirely — a South Reef skirmish in 1988, a railway viaduct bombed in Germany in 1945, the liquidation of the Kraków Ghetto completed in 1943, United Nations troops recapturing Seoul in 1951. It observes Pi Day, which is the kind of thing that happens when a date also holds Einstein’s birthday and the world cannot resist organizing itself around a number. The date contains multitudes of very different register.

But it is the physics bracket that earns attention. Einstein and Hawking were not contemporaries; they never met. What connects them is a project — the attempt to describe the universe in terms it cannot refuse. Einstein gave us general relativity, the framework that Hawking would later press against its own limits, asking what happens to spacetime at the point where it breaks, inside a singularity, at the boundary called an event horizon. Hawking showed that black holes — the most extreme consequence of Einstein’s equations — are not perfectly black. They leak. The radiation that bears his name is the answer to a question Einstein’s work made possible to ask.

The same year Einstein was born, Karl Marx died. Not on the same date — Marx died March 14, 1883 — but in the same calendar square, four years on. The German philosopher and theorist who had tried to describe the mechanics of human history breathed his last the same month and day the man who would describe the mechanics of the universe arrived. March 14 does not organize this into a lesson. It simply holds both of them, the way a shelf holds books that have nothing to say to each other and everything.

India’s first talking film, Alam Ara, was released on March 14, 1931. W. S. Gilbert and Arthur Sullivan gave The Mikado its first public performance on March 14, 1885, at the Savoy Theatre in London. Rossini’s Petite messe solennelle received its premiere on March 14, 1864, performed by twelve singers, two pianists, and a harmonium player in a Paris mansion. The date has a persistent taste for firsts — first sounds, first performances, first words sung aloud.

What March 14 finally offers is not symmetry. Einstein and Hawking did not cancel each other out; one opened a door, the other spent a lifetime inside the room it revealed. The date did not arrange them as mirror images. It simply happened to be present at both moments — the morning in Ulm when modern physics was given a body, and the morning in Cambridge when its greatest living practitioner was not. The universe Hawking described had been running continuously between those two Marches, expanding and cooling, indifferent to the dates we assign. But we assign them anyway. It is, apparently, what we do.