LIT: Isaac Asimov - [1956] The Last Question [Sci-Fi Short Story]

Initially conceptualized for the November 1956 issue of Science Fiction Quarterly, Asimov's "The Last Question" was written with few edits in a short amount of time. It is arguably his most famous and most acclaimed short story; in addition, Asimov himself considers it his personal favorite short story of his own authorship.

LIT: Robert A. Heinlein - [1959] "—All You Zombies—" [SciFi Short Story]

Robert A. Heinlein's "—All You Zombies—" is a science fiction short story first published in Fantasy and Science Fiction magazine's March 1959 issue. It has since been recognized as one of the most famous science fiction stories concerning time travel.
The story revolves around a single character who caught in a loop of paradoxes and time travel, bringing to light that individuals may be a means to an end in themselves.