An Art Thief Broke into the Louvre.

Through careful studying of the building plans and months of meticulous planning, he was able to evade all the security and stole several priceless paintings.

He then loaded the paintings into his van parked nearby. Just as he was about to leave, he heard the alarm go off in the building.

Without a moment's hesitation, he kicked the van into high gear and sped away.

"I don't understand", said the police officer.

"How could you plan all that so carefully, yet forget to fill up your gas tank?"

The Thief Replied:

Monsieur, that is the reason I stole the paintings: