"A bold and all-embracing exploration of the nature and progress of knowledge from one of today's great thinkers. Throughout history, mankind has struggled to understand life's mysteries, from the mundane to the seemingly miraculous. In this important new book, David Deutsch, an award-winning pioneer in the field of quantum computation, argues that explanations have a fundamental place in the universe. They have unlimited scope and power to cause...

After the sight of a night sky filled with stars makes eight-year-old Uma feel very small, she asks people how they think about infinity and gets a variety of answers before realizing the comfort in knowing that some things go on forever.