The Order of Time by Carlo Rovelli (1959) is about the physics of time and space: ‘We are time. We are this space, this clearing opened by the traces of memory inside the connections between our neurons. We are memory. We are nostalgia. We are longing for a future that will not come.’ The book is divided into three parts: 1) The Crumbling of Time, 2) The World without Time, and 3) The Sources of Time. Part One is an account of modern physics and time – from Anaximander (‘the Earth floats in space’) and Nicolaus Copernicus (‘the Sun is at the centre of the Universe’) to Albert Einstein (‘the equations that describe how proper times develop relative to each other’) and others. Poets, artists, philosophers, and scientists have all been fascinated by the mystery of time. The more humans develop, the more they transform their understanding of it. Carlo Rovelli talks of altitude, speed, the midday sun, timezones, Earth’s hemisph...