Ender's Game by Orson Scott Card

Card's Speaker for the Dead, published by Tor Books in 1986, follows Ender's Game as its sequel. Ender, still dealing with evil and empathy, tries to find a suitable home for the surviving eggs from the queen of the species he destroyed while trying to prevent the extermination of another intelligent race. This novel also won the Nebula and Hugo Awards. Tor Books published Xenocide, the third novel in Card's Ender series, in 1991. Ender works to save his adopted world from a deadly virus. The final novel in Card's Ender series, Children of the Mind, finds Ender taking a minor role. Published by Tor Books in 1996, the story revolves around a mission to stop a deadly virus from destroying Earth. Two beings built from Ender's consciousness and memory, named after his brother and sister, play the lead characters.

Card demonstrates his use of symbolism and allegory in his "Tales of Alvin Maker" series, a fantasy series set in a magical America. The first novel in the series, Seventh Son (1987), tells the story of the seventh son of a seventh son, who possesses the potential to be the defender of evil through his magical powers. This first novel of the series deals with the issue of religion in America.

Further volumes in Card's "Tales of Alvin Maker" series include: Red Prophet (1988), which focuses on the treatment of Indians; Prentice Alvin (1989), which deals with issues of black slavery; Alvin Journeyman (1995), in which Alvin returns to his birthplace to face a girl's accusations of improprieties; and Heartfire (1998), which again delves into the issues of ignorance and racism.

Isaac Asimov's Foundation (1951) is the first novel in the first Foundation trilogy—which includes Foundation and Empire and Second Foundation . This story takes place in a Galactic...