Robert Anson Heinlein (July 7, 1907 – May 8, 1988) was an American science fiction writer. Often called "the dean of science fiction writers",he was one of the most popular, influential, and controversial authors of the genre. He set a high standard for science and engineering plausibility and helped to raise the genre's standards of literary quality. He was one of the first writers to break into mainstream, general magazines such as The Saturday Evening Post, in the late 1940s, with unvarnished science fiction. He was among the first authors of bestselling, novel-length science fiction in the modern, mass-market era. For many years, Heinlein, Isaac Asimov, and Arthur C. Clarke were known as the "Big Three" of science fiction.

For those readers of Heinlein who have limited themselves to his Future History stories, his Lazarus Long saga, or perhaps his early Juveniles, Expanded Universe presents an interesting alternate view of Heinlein's writing including many stories not featured in other anthologies and a number of his nonfiction pieces as well.

"Solution Unsatisfactory" tells of an alternate ending to World War II where the US develops an intensely radioactive dust with selective half-life rather than the atomic bomb; its use on Germany and its parallel discovery by the Soviet Union bring the world into a Cold War many times worse than what the world truly experienced. In short, the balance of terror doctrine was and will always be a "solution unsatisfactory."

"PRAVDA Means TRUTH" is a short nonfiction piece on the dangers of a state-run media and its influence on the lives of citizens, based on true-life experiences Heinlein and his wife had while traveling to Russia at the same time Francis Gary Powers' U2 was brought down. Similarly, "Inside Intourist" tells of the Heinlein's experiences with the Soviet tourism agency (through which all travel had to be arranged). Contrary to some reviewers' comments, Heinlein never condescends upon the people of Russia and its former republics; he merely explains the dangers the people face from their oppressive government. He in fact often discusses how nicely the actual people of Russia treated him and his wife on their trip.

Many other stories and nonfiction pieces (some dated by their survivalist Cold War era themes) are included; another of interest is "No Bands Playing, No Flags Flying," which tells the slightly fictionalized tale of courage and TB treatments (which Heinlein himself underwent) in the pre-WW2 Navy. His survivalist pieces may seem dated or extremist today, yet for the cold war climate (and today's constant threat of terrorism), the message is still clear: those who are ready will survive catastrophes, and those who aren't may very well not.