" So the distinction between people was caused by the great god, and the Bushmen, who want only to be left in peace, do not compete in issues which they cannot win. They are only frightened by other peoples and hope to be spared their attention. Kung Bushmen call all strangers zhu dole, which means “stranger” but, literally, “dangerous person”; they call all non-Bushmen zo si, which means “animals without hooves,” because, they say, non-Bushmen are angry and dangerous like lions and hyenas. But Kung Bushmen call themselves zhu twa si, the harmless people. Twa means “just” or “only,” in the sense that you say: “It was just the wind” or “It is only me. "

― Elizabeth Marshall Thomas , The Harmless People