* The Forever Witness
* The Widening Spell
* The Last Year
* The Man in Space
* The Planet that Was
Short stories
* "The Man Who Had Everything"
* "The Last of the Survivors"
* "The End of the World"
* "The City of Shadows"
* "The Day the Earth Stood Still"
Essays
* "The Future of Science Fiction"
* "The Role of Science Fiction in Society"
* "Science Fiction and the New World Order"
* "Science Fiction and the Search for Truth"
* "The Legacy of Science Fiction"
Articles
* "The Science of Science Fiction"
* "The History of Science Fiction"
* "Science Fiction and the Media"
* "Science Fiction and Education"
* "Science Fiction and the Arts"
Speeches
* "The Future of Science Fiction"
* "The Role of Science Fiction in Society"
* "Science Fiction and the New World Order"
* "Science Fiction and the Search for Truth"
* "The Legacy of Science Fiction"