Why is there something rather than nothing?

This file has no night, no crash site, no witness. It has a sentence.

In 1714, in the Principles of Nature and Grace, Gottfried Wilhelm Leibniz sets down a principle: nothing happens without a sufficient reason. Then he follows it to the edge. In Jonathan Bennett's modernised translation: Given that principle, the first question we can fairly ask is: Why is there something rather than nothing? After all, nothing is simpler and easier than something.[leibniz-1714]

That last line is the one I keep coming back to. Nothing is simpler. If you had to bet on what would exist, with no information at all, the empty bet looks cheaper. And yet here we are, with stars and archives and people asking.

Leibniz did not leave the question hanging. In the next section he argues that the reason cannot lie inside the chain of things that need explaining, and so must lie in a necessary being, which he calls God[leibniz-1714]. That is the first answer on file, and it is a theological one.

Almost three centuries later, the Catholic Church's Catechism, promulgated in October 1992, gives its own version in paragraph 296: God needs no pre-existent thing or any help in order to create[catechism-296], and creates freely out of nothing. It is one religious tradition's answer, stated as faith.

The file doesn't say what Leibniz felt writing it. It does say that the question, once written down, never went back in the drawer.

The paper trail on this one is a conversation across three centuries, and most of it is people disagreeing about one word.

It starts with Leibniz in 1714[leibniz-1714], as above. It picks up formally in the Stanford Encyclopedia of Philosophy, where Roy Sorensen's entry on nothingness, first published in August 2003 and substantively revised in 2022, surveys the question and the doubts about it. The entry has its own dry opening move: Why is there something rather than nothing? Well, why not? Why expect nothing rather than something?[sep-nothingness]

Physics walks in properly in January 2012. On NPR's Talk of the Nation, Lawrence Krauss presented his book A Universe from Nothing and argued that the question why is there something rather than nothing is really a scientific question[krauss-npr-2012], because both nothing and something are scientific concepts. On his account, quantum mechanics lets nothing create something.

Two months later came the reply. The philosopher of physics David Albert reviewed Krauss's book in the New York Times, and the Stanford entry quotes him: vacuum states are particular arrangements of elementary physical stuff[sep-nothingness]. A universe from a quantum vacuum, on that view, is not a universe from nothing. I should be clear that the file reads Albert only through the encyclopedia's quotation; the review itself could not be opened.

In February 2018 the physicist Sean Carroll posted a paper written for the Routledge Companion to the Philosophy of Physics. It opens plainly, It seems natural to ask why the universe exists at all[carroll-2018], and works through the options. His conclusion is that modern physics allows the universe to exist as a self-contained system, but that any account must end in brute facts.

So the trail is a philosopher, a church, an encyclopedia, two physicists and a philosopher of physics. None of them has a document the others accept as settling it.

The bend in this story comes in 2012, and it is not a discovery. It is a dispute over what counts as an answer.

Krauss's side is the fair other side here, and it is a serious one. He argues the label Unexplained is outdated: physics has changed what nothing means. Quantum mechanics shows that nothing is unstable and creates something all the time, so the existence of something is what physics expects[krauss-npr-2012]. On that view, what remains is a quarrel about words, not about the universe.

The philosophers' reply is that the physicists answered a different question. Albert's line, as the Stanford entry gives it, is that vacuum states are particular arrangements of elementary physical stuff[sep-nothingness]. A vacuum has fields and laws. That is not nothing; it is a very quiet something.

Carroll, a physicist, takes a third line. Physics can show the universe may exist on its own, with nothing outside it. But at some point explanation stops, and what is left is brute facts[carroll-2018]. That is close to saying the question may not have the kind of answer Leibniz wanted.

And the theological answer stands alongside, unchanged: a necessary being for Leibniz[leibniz-1714], creation out of nothing in Catholic teaching[catechism-296]. This file cannot check it, and does not try.

Some philosophers go further and doubt the question is well-formed at all; the Stanford entry[sep-nothingness] surveys those doubts.

Our Finding stays Unexplained. Not because nobody has an answer, but because each approach has one and none is accepted by the others, and it is unclear what evidence could decide between them.

This is the most open drawer in the archive, and the honest list is short because the questions are big.

• Is nothing a coherent state? Could it have obtained, or is the question empty? The Stanford entry[sep-nothingness] sets out both views.
• Can physics ever answer it? Or can it only push the question back to the laws of physics themselves, which is the gap Albert[sep-nothingness] points to and Carroll[carroll-2018] accepts as brute fact?
• Must every fact have a sufficient reason? Leibniz built the question on that principle[leibniz-1714]. Drop the principle and the question changes shape.

What the file does not hold, too. Albert's review and Krauss's book are cited only through the encyclopedia[sep-nothingness] and the NPR interview[krauss-npr-2012]. The theology column has one tradition, the Catholic Catechism[catechism-296]; Jewish, Islamic, Hindu and Buddhist answers are not yet sourced here.

And what the record does not prove: that God exists or does not; that physics has solved it; that the question is meaningless. Each of those is a position, not a finding.

The documents and the timeline are below. They begin with one sentence from 1714.