First published nearly 70 years ago, this masterpiece is regarded as one of the most influential science fiction novels of the 20th century. Olaf Stapledon creates a history of the evolution of humankind over the next two billion years, and has lots of it right It's so vast; it brings the concept of time' closer to the human experience. "No book before or since has ever had such an impact upon my imagination," declared 2001 author Arthur C. Clarke of this masterpiece of science fiction. An imaginative, ambitious history of humanity's future that spans billions of years, this 1930 epic abounds in prescient speculations. Not only a must-read for scholars of the genre but even for those who want to look beyond their own immortality, as well as our civilizations immortality.