Greatest Asset: Self With graduation season upon us, Buffett offered some appropriate worldly wisdom. Imagine a genie comes to a 17 year old and offers to get him any car he wants. However, there is one catch – whatever car he chooses he must make it last a lifetime. Well, you can imagine that the young man would read the owner’s manual 10 times, would change the oil twice as often as suggested, etc. to help that car last 50 years. In the same way, Buffett continued, we each receive one body and one mind for a lifetime. You cannot repair them at age 60. You must maintain them.