The End of Eternity
by Isaac Asimov
Andrew Harlan, Technician in the everwhen of Eternity, falls in love and starts a chain
of events that could lead to the end of everything.
— Michael Main
He had boarded the kettle in the 575th Century, the base of operations assigned to him
two years earlier. At the time the 575th had been the farthest upwhen he had ever
traveled. Now he was moving upwhen to the 2456th Century.
The End of Eternity by Isaac Asimov (Doubleday,
August 1955).