A philosopher who likes to run and philosophises about running — from the start, the reader’s mind is alive with ideas. As humans, we can outrun anything — other animals have faster top speeds but we have more stamina. Running, then, is a big part of being human. It’s why we can hunt so effectively. It’s a route to protein, which helped to make our brains what they are. The author tells us that this book will have the rhythm of a run and this is somehow true. Exercise energises your thoughts, and reading this book is a bit like thinking while you run — about life, death, history... and running itself.