While we scientists know how to use it to make all those digital devices, we do not know what it means. We don't know what it's telling us about the fundamental nature of reality. It is into that chasm that acclaimed theoretical physicist and author Carlo Rovelli leaps with his new book.

A remarkably wide-ranging new meditation on quantum theory.

.... an argument that nothing we see and experience actually exists. Just as the rainbow is a manifestation of the angle between you, some water droplets in the sky, and the sun, Rovelli tells us that the atoms, electrons, photons of light and other stuff of the universe manifest only in their interactions with each other.

... his most beautiful yet.

... Rovelli tackles both the quantum realm and the ways it helps us make sense of the mind with refreshing clarity and without hand-wavy mystery-mongering.

... brief but potentially momentous.

These are big ideas, but Rovelli easily leads readers through the knotty logic, often with lyricism: 'The courage to radically reinvent the world: this was the subtle fascination of science that first captivated me as a rebellious adolescent.' Readers who follow along will be left in awe..

The theoretical physicist and bestselling author digs into his discipline’s most confounding concept.