North, East, South, West... The offspring of Simon Tregarth, half earthling, half witch-brood, realized that they alone could perceive the four directions - for everyone else, there was no East! It was a blank in the mind, a blank in legend and history.
And when new menaces threatened, the Tregarths realized that in that mental barrier there lay the key to all their world... somewhere to the unknown eastward must lie the sorcery that had secretly molded their destinies!
Andre Alice Norton (1912-2005) was an American science fiction and fantasy author (with some works of historical fiction and contemporary fiction) under the noms de plume Andre Norton, Andrew North and Allen Weston. Norton published her first novel in 1934, and was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the Science Fiction and Fantasy Writers of America (SFWA) association in 1983.
Andre Norton. Wikipedia.