A Brief History of Infinity: The Quest to Think the Unthinkable
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A Brief History of Infinity: The Quest to Think the Unthinkable by Brian Clegg | Free Audiobook

By Brian Clegg

Narrated by Gordon Griffin

🎧 9 hours and 3 minutes 📘 Audible Studios 📅 March 4, 2013 🌐 English
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About This Audiobook

Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the street to the chemist, but that’s just peanuts to space.’ Douglas Adams, Hitch-hiker’s Guide to the Galaxy.

We human beings have trouble with infinity – yet infinity is a surprisingly human subject. Philosophers and mathematicians have gone mad contemplating its nature and complexity – yet it is a concept routinely used by schoolchildren. Exploring the infinite is a journey into paradox. Here is a quantity that turns arithmetic on its head, making it feasible that 1 = 0. Here is a concept that enables us to cram as many extra guests as we like into an already full hotel. Most bizarrely of all, it is quite easy to show that there must be something bigger than infinity – when it surely should be the biggest thing that could possibly be.

Brian Clegg takes us on a fascinating tour of that borderland between the extremely large and the ultimate that takes us from Archimedes, counting the grains of sand that would fill the universe, to the latest theories on the physical reality of the infinite. Full of unexpected delights, whether St Augustine contemplating the nature of creation, Newton and Leibniz battling over ownership of calculus, or Cantor struggling to publicise his vision of the transfinite, infinity’s fascination is in the way it brings together the everyday and the extraordinary, prosaic daily life and the esoteric. Whether your interest in infinity is mathematical, philosophical, spiritual or just plain curious, this accessible title offers a stimulating and entertaining listen.

Brian Clegg is author of the highly acclaimed Light Years and The First Scientist. While working for British Airways he set up the Emerging Technologies Group, responsible for researching cutting-edge technologies. He currently runs his own creative consultancy business.

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Quick Take

  • Narration: Gordon Griffin brings a patient, academic warmth to the material that prevents the mathematics from feeling cold; he handles both the historical anecdotes and the conceptual passages with equal steadiness.
  • Themes: The history of mathematical and philosophical approaches to infinity, paradox and limits of human reasoning, the relationship between the finite and the infinite
  • Mood: Curious and unhurried, like following a knowledgeable guide through a museum full of beautiful puzzles
  • Verdict: An accessible and entertaining tour of infinity’s intellectual history, best suited to general readers who want the story more than the technical depth.

I was halfway through my morning commute when Brian Clegg introduced Hilbert’s Hotel, the famous thought experiment in which a hotel with infinitely many rooms is completely full, and yet can still accommodate infinitely many new guests by moving each current guest to double their room number. I had to sit with that for a moment, which is precisely what the book is designed to make you do. A Brief History of Infinity is not a textbook, and it does not pretend to be. It is an invitation to be genuinely baffled by a concept that human beings have been struggling to think clearly about for thousands of years, and Clegg proves to be an unusually good guide for that particular bafflement.

Clegg opens with a Douglas Adams epigraph about the vastness of space, and the choice is revealing. He is aiming for the sensibility of popular science writing at its best: rigorous enough to be honest about the difficulty of the ideas, accessible enough to remain company for a general reader. He largely succeeds, though the balance is not always maintained with equal ease across the full nine hours. The passages on ancient Greek philosophy are handled as deftly as the passages on Cantor’s set theory, which is a harder balancing act than it appears.

From Archimedes to Cantor

The book’s historical architecture is its greatest strength. Clegg moves chronologically and thematically from ancient attempts to count the grains of sand in the universe, Archimedes’ remarkable Sand Reckoner being one of the book’s best sequences, through the philosophical quandaries of Aristotle and Zeno, the theological complications of infinity in Augustine and Aquinas, the calculus dispute between Newton and Leibniz, and finally to Cantor’s extraordinary late-19th century discovery that there are different sizes of infinity.

That final section on Cantor is where the book earns its most unusual ground. Cantor’s demonstration that the infinity of real numbers is genuinely larger than the infinity of integers, that some infinities are, as Clegg renders it, bigger than other infinities, is one of the most counterintuitive results in the history of mathematics, and Clegg handles it with admirable clarity. He also gives attention to the personal cost of Cantor’s work: the rejection from contemporaries, the periods of mental breakdown, the tragic isolation of someone who understood something profound that the mathematical establishment of his era could not accept. The human story and the intellectual story are inseparable here, and Clegg makes the most of that inseparability.

Where the Historical Approach Has Its Costs

One reviewer, R. David Stamm, criticized the book for containing too much historical background that feels insufficiently connected to infinity as such. That is a fair observation, and it points to a genuine tension in the book’s design. Clegg is a narrative historian of ideas as much as he is an explainer of mathematics, and he sometimes follows the biographical thread of a figure like St. Augustine well beyond what the development of infinity’s concept strictly requires. For listeners who came specifically for the mathematics, these passages may feel like detours that interrupt the conceptual momentum.

Reviewer Alan L. Zinn described holding attention to the very end of a subject that normally loses him at the first chapter, crediting Clegg with the ability to keep mathematical subjects accessible through narrative momentum. That is the book’s core achievement: it makes a genuinely difficult conceptual history into something you can follow without a mathematics background, and without feeling patronized. The repetition that some reviewers notice is more likely to feel reinforcing than redundant for listeners who are new to these ideas, and the consistent return to the core paradoxes of infinity helps the material accumulate rather than fragment across the nine-hour runtime.

Gordon Griffin and the Pace of Difficult Ideas

Gordon Griffin’s narration is one of the audiobook’s quiet assets. He works through the historical passages and the mathematical paradoxes with equal steadiness, never accelerating into exposition or slowing into over-emphasis. His delivery has the quality of a patient lecturer who trusts the material to carry its own weight, which is the right instinct for content that asks listeners to hold genuinely paradoxical ideas in mind without resolution. At nine hours, the runtime feels appropriate rather than excessive; the historical material needs time to breathe, and Griffin’s pacing honors that without allowing the book to become drowsy.

The book was released in 2013 on Audible, based on a print edition that predates it considerably, and the mathematics it discusses has not dated. Cantor’s transfinite arithmetic, Zeno’s paradoxes, and the conceptual status of actual versus potential infinity are perennial questions rather than trending topics, which gives this a durability that more current-events-adjacent popular science titles lack. Listen if you are curious about mathematics and its history and want a guided tour through one of the most conceptually strange corners of human thought. Skip if you are a mathematician looking for technical depth rather than popular narrative.

Nine Hours Well Spent or Not

Gordon Griffin’s narration is one of the audiobook’s quiet assets. He works through the historical passages and the mathematical paradoxes with equal steadiness, never accelerating into exposition or slowing into over-emphasis. His delivery has the quality of a patient lecturer who trusts the material to carry its own weight, which is the right instinct for content that asks listeners to hold genuinely paradoxical ideas in mind without resolution.

At nine hours, the runtime feels appropriate rather than excessive; the historical material needs time to breathe, and Griffin’s pacing honors that without allowing the book to become drowsy. The book was released in 2013 on Audible, based on a print edition that predates it, and the mathematics it discusses has not dated. Cantor’s transfinite arithmetic, Zeno’s paradoxes, and the conceptual status of actual versus potential infinity are perennial questions. Listen if you are curious about mathematics and its history and want a guided tour through one of the most conceptually strange corners of human thought. Skip if you are a mathematician looking for technical depth rather than popular narrative.

Frequently Asked Questions

Do I need a mathematics background to follow A Brief History of Infinity?

No. Clegg explicitly writes for general readers, and the mathematical concepts are introduced through historical narrative and thought experiments rather than formal notation. Reviewers without mathematics backgrounds describe following the book without difficulty.

Is there too much historical biography and not enough mathematics?

This depends on what you are looking for. Clegg is primarily a historian of ideas, and the book weaves biography heavily into the conceptual content. One reviewer found this frustrating; others found it the source of the book’s readability. If you want technical mathematical depth, this is the wrong book; if you want the story of how humanity has tried to think about infinity, the balance works well.

How does Gordon Griffin’s narration handle the mathematical paradoxes and thought experiments?

Griffin takes a patient, steady approach that suits the material well. He does not dramatize the paradoxes or rush through the concepts. The pacing gives the ideas room, which is useful for content where slowing down and sitting with a counterintuitive claim is part of the experience.

The book was released in 2013. Is it still current and worth listening to?

Yes. The history of infinity is not a field that changes rapidly; Zeno’s paradoxes, Cantor’s transfinite numbers, and the philosophical debates around actual versus potential infinity are perennial topics. Nothing in the book’s subject matter has been superseded by more recent work in a way that would diminish its value.

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Alexandra Reed

Written by Alexandra Reed

Founder & Literary Critic