The Theory of Everything

Adapted from a series of lectures, this short, accessible book traces humanity's evolving understanding of the universe from ancient cosmology to the frontiers of modern physics. In plain language and largely without equations, the author walks readers through the major ideas that reshaped our picture of the cosmos: the expanding universe, the Big Bang origin of space and time, the nature and behavior of black holes, and the strange relationship between time and gravity. He explains how general relativity and quantum mechanics each describe reality, why reconciling them is the central unsolved problem of physics, and what a unified theory might mean. Along the way he considers the origin and possible fate of the universe, the arrow of time, and whether a complete set of physical laws could ever fully describe everything. Drawing on the author's own work on black holes and cosmology, the book distills decades of theoretical physics into a brief, lucid overview aimed squarely at the general reader curious about where the universe came from and where it is going.