>> that's crazy, like saying if you educate more people it hurts the ones already educated of the sort. it's to meet their potential. >> our thanks to warren buffett for that. now, as for why he's speaking out about this now, he told me that he's been talking about this to student groups that come visit him for years but after he read the book "lean in" he decided this is a message to put out there more broadly, the way he puts it, look how much america accomplished not even using 100% of our talent. he says there is much more that we can do. if you would like to read his essay on women and work, just go to fortune.com. christine? >> thanks, poppy. for more on the empowerment of