The big news early this week in the often overlapping worlds of art, philanthropy, and sophisticated tax strategies was Leonard Lauder's $1 billion donation of cubist art to the Met. It's Lauder's largest charitable donation to-date, and even though he has a long history of philantrophy and is still worth more than $7 billion according to Forbes, it's unlikely he'll ever make a bigger gift. Lauder's wealth is tied up in Estée Lauder stock you see: he simply isn't rich enough to give away much more money or add to his museum worthy art collection, and maintain his controlling stake in the family's business.