What follows is a conversation with David Rubenstein, co-founder of the Carlyle Group, one of the most storied private-equity firms in history. We spoke with Rubenstein in August, 2017, for our six-part series, “The Secret Life of a C.E.O.” Since we spoke, Rubenstein stepped down as co-C.E.O. of Carlyle, but he’s still executive chairman. DUBNER: How do you do? So nice to talk to you. Thanks. DUBNER: I have to say, I’ve been watching a bunch of your TV interviews. RUBENSTEIN: Well, thank you.