By His Bootstraps

Common card · No. 348531

"By His Bootstraps" is a 20,000 word science fiction novella by American writer Robert A. Heinlein. It plays with some of the inherent paradoxes that would be caused by time travel. The story was published in the October 1941 issue of Astounding Science Fiction under the pen name Anson MacDonald; the same issue has "Common Sense" under Heinlein's name. "By His Bootstraps" was reprinted in Heinlein's 1959 collection The Menace From Earth, and in several subsequent anthologies, and is now available in at least two audio editions. Under the title "The Time Gate", it was also included in a 1958 Crest paperback anthology, Race to the Stars.

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