The quotations are organized by topic—alien worlds; darkness and light; robots, androids, and cyborgs; machines and technology; weapons; and more than one hundred others. The reader will encounter the wit and wisdom of renowned authors (H. G. Wells, Ray Bradbury, J. R. R. Tolkien, Ursula K. Le Guin) along with definitive versions of such important statements as Isaac Asimov’s Three Laws of Robotics and Star Trek’s Prime Directive. With its thorough index, this book is both an invaluable resource for the writer or scholar and an irresistible page-turner for the curious browser.