My grandfather told me this story...

Gregro (GRAY-grow) and his friend, the Professor, were going to the Dead Sea to spend the afternoon at the beach. On the way, the Professor was explaining all the secrets of astronomy, algebra, the Qur'an, and economics. Gregro seemed half-interested in the discussion and spent most of the walk hitting a can with a stick. Occasionally, Gregro would look up at the Professor with a good-natured and bemused, "How remarkable!"

When the two men got to the beach, they swam and then washed off the salt and lay down upon their blankets. After a few minutes, Gregro got up and grabbed his drinking cup and dug a small hole in the sand near their beachspot. Gregro then went to the sea and grabbed a cup of water and then poured it into the hole he had dug.

Again and again, Gregro went to the sea to get another cup of water, and again and again, the hole would swallow it up. After several minutes of watching his friend's endeavor, the Professor asked Gregro, "Just what is it that you're doing?"

Gregro explained, "I'm going to put the sea into this little hole I've dug."

The Professor laughed and told Gregro it would never work.

Gregro then chided the Professor, "You have put the whole universe into your head, so I don't see why I shouldn't be able to put the ocean into this hole."