A medieval oracle, prophesied to a king that his favorite woman would soon die.
Sure enough, the woman died a short time later. The king was outraged at the fortune teller, certain that his prophecy had brought about the woman’s death. He summoned the oracle and gave her this command: “Oracle, tell me when you will die!”
The oracle realized that the king was planning to kill her, immediately, no matter what answer she gave. So she said, finally, “My king, I do not know when I will die. I only know that whenever I die, you will die two days later.”