Once a famous multi-millionaire aged about 70 was travelling in a flight. One of his co-passenger who knew about him asked, "Why can't u take rest & Why do u have to still work even now as u r already aged & also have enough money?"
"Can I ask u back a question, to provide you a reply?" asked the Millionaire.
"This flight is currently flying well at a considerable height already & hence can we switch off its engine?" asked the millionaire.
"No, if that happens, it will end in a major accident & we would all die immediately" was the reply from that co-passenger.
"That's right. The same thing is applicable for me as well. The moment I stop working, my mind and body will get rusted & will die soon" replied the millionaire politely ;-)
