Legendary art dealer Barbara Gladstone joins us for a very rare interview from the studio in New York. What would she do differently if she started a gallery today? "I probably wouldn't do it," she says.

Barbara has been at the top of the business since the 1980s and now represents more than 70 artists and estates. She tells us how she started out with a small print business, and how things developed from there. We talk about art now, the future of the gallery, and what she would change about the art market, including the "idea that collecting is shopping, because I think that there is something that art adds to life," she says. "What is really interesting is that it's not over," she says. "It's not even over when the artist dies because there's constant evaluation and re-thinking going on. And when you put one work in proximity to another work 50 years later, something new can happen. I mean, I think that's why it's important."