The Universe Speaks in Numbers

Farmelo’s history of the traffic between pure mathematics and fundamental physics, from Newton and Maxwell through to string theory, and of the claim — openly contested among working physicists — that mathematical beauty has been a reliable guide to physical truth even in regions no experiment can currently reach. The reporting is built on interviews with the people on both sides of that disagreement, so the book is as much about how a field decides what counts as evidence as it is about the physics.

Why it’s on the list: On the “when you have time” half of Fil Arons’s list. The general version of the question its author’s Dirac biography raises in one life.

Where I saw it: @FilArons’s November 16, 2025 recommended-reading list.

Connections

• The Strangest Man — the same author on Dirac, whose trust in mathematical beauty is this book’s founding case.
• Albert Einstein — general relativity as the paradigm example of maths arriving before the measurement.
• Republic of Letters — an argument conducted between specialists, reported for outsiders.