"They never shelter themselves under roofed houses, but avoid them as people ordinarily avoid sepulchres as things not fitted for common use. Nor is there even to be found among them a cabin thatched with reed; but they wander about, roaming over the mountains and the woods, and accustom themselves to bear frost and hunger and thirst from their very cradles. And even when abroad they never enter a house unless under the compulsion of some extreme necessity; nor, indeed, do they think people under roofs as safe as others."