Nullius in Verba

In this groundbreaking book, David Deutsch argues that explanations have a fundamental place in the universe and that improving them is the basic regulating principle of all successful human endeavor. The book takes readers on a journey through various fields of science, history of civilization, art, moral values, and the theory of political institutions. Deutsch explains how we form new explanations and drop bad ones, and discusses the conditions under which progress, which he argues is potentially boundless, can and cannot happen. He emphasizes the importance of good explanations, which he defines as those that are 'hard to vary' and have 'reach', and argues that these explanations are central to the Enlightenment way of thinking and to all scientific and philosophical progress.

In 'The Fabric of Reality', David Deutsch explores a four-strand theory of everything, integrating Hugh Everett's many-worlds interpretation of quantum physics, Karl Popper's epistemology, Alan Turing's theory of computation, and Richard Dawkins's evolutionary theory. The book discusses the implications of these theories, including the concept of the multiverse, quantum computers, time travel, and the ultimate fate of the universe. Deutsch argues that these theories, when taken literally and jointly, reveal a unified, objective, and comprehensible fabric of reality.