Eon held up two keys that he had taken from his cloak pocket and handed them to me. “One will take you to the past; the other, your future.” “They’re gold!” I said in wonder. Eon nodded. “Any key used to open something enchanted is made of gold.” I smiled at this strange remark. “Is that a rule?” “It is more than a mere rule, for rules can be changed. It is truth.”