Worlds of Exile and Illusion: Rocannon's World / Planet of Exile / City of Illusions (Hainish Cycle, #1-3)

by Ursula K. Le Guin

Orry was too benumbed with drugs and persuasions to disbelieve anything, while if Ramarren believed or not was little matter. Abundibot evidently told lies for the mere pleasure of it.