Isaac Asimov

Adding a Dimension is a collection of seventeen scientific essays by Isaac Asimov. It was the third of a series of books collecting essays from The Magazine of Fantasy and Science Fiction. It was first published by Doubleday & Company in 1964.

The End of Eternity by Isaac Asimov is a science fiction novel, with mystery and thriller elements, on the subjects of time travel and social engineering. The themes are very different from most of his robot and 'space opera' stories, and take a clever approach to time paradoxes.