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

by Ursula K. Le Guin

The guardian of the well had the gift, which Rocannon had only heard rumor of on one other planet, of unsealing the telepathic sense; and he had taught Rocannon how to limit and direct it, but there had been no time to learn its use, its practice.