A thief was presented in the court of a king. For a judgment, the king asked him to make any statement. If the statement was to be true, he would be burnt alive and if the statement was to be false, he would be thrown in the sea. But after hearing the statement, the king had to let him go.
What did the thief say ?
I will be thrown into the sea. Now if the king threw him in the sea, the statement will come as true and thus he will have to be burnt alive. But if the king burnt him, the statement will come out as false. Thus the king had no choice but to leave him.