This chain letter is a hoax.
Warren Buffet neither authored nor has authorized it.
It is also over a year old already in its current form. Before the Buffet quote from July 7, 2011, got grafted onto the top of it in October, 2011, and this chain was falsely credited to him, this was passed around as an anonymous Email chain starting in November 2009.
You can easily see what 3 days gets you with this sort of thing.
If you follow Warren Buffet at all, this ran phoney from the get go. And it is.