A collection of science fiction short stories by Arthur C. Clarke. Contents: Second Dawn If I Forget Thee, Oh Earth Breaking Strain History Lesson (as "Expedition to Earth" in the British Edition, Sidgwick & Jackson, 1954) Superiority Exile of the Eons Hide-and-Seek Expedition to Earth (as "Encounter in the Dawn" in the British Edition, Sidgwick & Jackson, 1954) Loophole Inheritance The Sentinel (basis for 2001)