Piketty's new book has been a best-seller and dominated recent discussion on inequality. Recently though The Financial Times accused Piketty of basing his book on bad data that "skew his findings." But, The Huffington Post said, The Financial Times did not understand how the economist made his conclusions in the book. Piketty also sent the Times a rebuttal to the paper's criticism of the book on Thursday.
In the Monday sit-down, Piketty said he did not plan to get into more skirmishes with the Financial Times going forward.
"This particular debate is over," Piketty said.
Warren also said that "wealth does not trickle down. It trickles up. It trickles from everyone else to those who are rich."
Watch the interview here.