For 10 points, name this blind Argentinian short story writer.
A story by this author begins when a real-life friend of this author remembers the phrase "mirrors and copulation are abominable." This author imagined a novel in which each possible decision occurs, creating different paths that branch and re-converge. This author described an object in a mediocre poet's basement which allows observers to see every point in the (*) universe. He wrote about books containing every possible permutation of 25 characters, arranged on shelves in hexagonal rooms, in another story. This author of the Ficciones wrote "The Aleph" and "The Library of Babel." For 10 points, name this blind Argentinian short story writer.
A story by this author begins when a real-life friend of this author remembers the phrase "mirrors and copulation are abominable.
Jorge Luis Borges