A Princess of Mars

The Gods of Mars

Edgar Rice Burroughs

Starship Troopers

Robert A. Heinlein

Dune

Frank Herbert

Foundation

Isaac Asimov

The moon is a harsh mistress

Robert A. Heinlein

Foundation and Empire

Isaac Asimov

Second Foundation

Isaac Asimov

Tarzan of the Apes

Edgar Rice Burroughs

I, Robot

Isaac Asimov

Ender's Game

Orson Scott Card

The Hitch Hiker's Guide to the Galaxy

Douglas Adams

Rendezvous with Rama

Arthur C. Clarke