A wonderful collection of Heinlein's essays/writings, including never-before-collected stories and never-before-collected articles and previously unpublished commentaries on subjects like Crime and Punishment to the Love Life of the American teenager; from Nuclear Power to the Pragmatics of Patriotism; from Prophecy to Destiny; from Geopolitic to Post-holocaust America, etc., i.e. and Expanded Universe! Begins with Life-Line, as any Robert A. Heinlein retrospective must, and also includes such early classics as Solution Unsatisfactory and Blowups Happen. However, the majority of the book are far lesser known works, plus commentaries.