Take these," said the old man, holding out a white stone and a black stone that had been embedded at the center of the breastplate. "They are called Urim and Thummim. The black signifies 'yes,' and the white 'no.' When you are unable to read the omens, they will help you to do so. Always ask an objective question.
Paulo CoelhoThen the Warrior of the Light thanks his traveling companions, takes a deep breath and continues on, laden with memories of an unforgettable journey.
Paulo Coelho