The End Of Eternity | Isaac Asimov | Kharidobechobooks

He is a Technician, and his job is to range through past and future centuries, monitoring and even altering Time's myriad cause-and-effect relationships. The Reality Changes Harlan initiates may affect the lives of up to fifty billion people. Above all, therefore, a Technician must be dispassionate. An emotional make-up is a distinct handicap. But when he meets Noys, Harlan falls victim to a phenomenon older than Time itself -- love. It is then that he realizes that years of self-discipline must be cast aside. He must use the awesome technique of the Eternals to twist Time so that he and Noys might survive -- together His name is Andrew Harlan. He is an Eternal: a member of a highly exclusive organization.