We can't talk about inequality without talking about Joseph Stiglitz.
is a Professor of Economics at Columbia University. He was awarded the
Nobel Prize in Economics in 2001 for his work on asymmetric information
in markets and the John Bates
Clark Medal from the American Economic Association in 1979. Stiglitz
served as senior vice president and chief
economist of the World Bank and was the chairman of the US
president's Council of Economic Advisers during the Clinton
Stiglitz is a harsh critic of the use of GDP as a measure of economic well being. Here is a short article on this topic at The Guardian. For those of you that like to outsource your reading, here is a YouTube video.
Stiglitz also writes quite a lot about the effects of inequality on growth.
Here is an interview at Rolling Stone.
Here is a book review at the NYT
Here is a long article with lots of good economics at Vanity Fair
Here is a video of his TED Talk on inequality