" Mog-ur has been spending all day and half the night in the place of the spirits. It must be a ceremony. While Ayla was gone, he wouldn't go near it; now he hardly ever comes out. When he does, he's so absentminded he forgets to eat. Sometimes he forgets to eat while he's eating. "

― Jean M. Auel , The Clan of the Cave Bear (Earth's Children #1)