The End of Eternity

"In the still very distant future, man has learned to travel through time, moving with ease from one century to another and arranging trade between different eras. Time travel also makes it possible to keep humanity under strict control, changing anything that could cause serious upheavals in history. The analysts and technicians of the closed caste of the Eternals, the only ones able to manipulate past and future, are delegated to make the changes. One day, however, Andrew Harlan, a young Eternal, is faced with an atrocious choice: save eternity or save his love, and he will have no doubts. One of Isaac Asimov's most brilliant novels, a staggering epic that stands as a viable alternative to the universe of robots, the Galactic Empire, and the Foundation." (Source: https://www.oscarmondadori.it/libri/la-fine-delleternita-isaac-asimov/ , translated from Italian)