An extraordinary history of humanity's changing vision of the universe. In this masterly synthesis, Arthur Koestler cuts through the sterile distinction between 'sciences' and 'humanities' to bring to life the whole history of cosmology from the Babylonians to Newton. He shows how the tragic split between science and religion arose and how, in particular, the modern world-view replaced the medieval world-view in the scientific revolution of the seventeenth century. He also provides vivid and judicious pen-portraits of a string of great scientists and makes clear the role that political bias and unconscious prejudice played in their creativity.The Sleepwalkers - Arthur Koestler Preface Introduction Part One: The Heroic Age 1. Dawn 2. The Harmony of the Spheres 3. The Earth Adrift 4. The Failure of Nerve 5. The Divorce from Reality Chronological Table to Part One Part Two: Dark Interlude 1. The Rectangular Universe 2. The Walled-in Universe 3. The Universe of the Schoolmen Chronological Table to Part Two Part Three: The Timid Canon 1. The Life of Copernicus 2. The System of Copernicus Chronological Table to Part Three Part Four: The Watershed 1. The Young Kepler 2. The Cosmic Mystery 3. Growing Pains 4. Tycho de Brahe 5. Tycho and Kepler 6. The Giving of the Laws 7. Kepler Depressed 8. Kepler and Galileo 9. Chaos and Harmony 10. Computing a Bride 11. The Last Years Part Five: The Parting of the Ways 1. The Burden of Proof 2. The Trial of Galileo 3. The Newtonian Synthesis Chronological Table to Parts Four and Five Epilogue Selected Bibliography Notes IndexArthur Koestler(1905–1983) was an extraordinary polymath, writer, and political polemicist. His most famous works include the novelsDarkness at NoonandArrival and Departure; his autobiographical writings, includingSpanish Testament