Prince William Jokes Princess Diana Would Have Been A “Nightmare” Grandmother

William speaks about how Diana gave him a sense of normalcy normally not afforded to members of the royal family—something he and Kate Middleton are doing with their own children. “She understood there was a real life outside the palace walls,” he says, mentioning some of her numerous philanthropic efforts. “She wanted us to see it from a very young age.”

In the documentary, William and Prince Harry share never-before-seen family photos and open up about Diana’s life inside the palace walls. For the most part, the two brothers had a happy early childhood. In fact, William only ever remembers seeing his mom cry over stories in the media. “Harry and I lived through that, and one lesson I’ve learned is you never let [the media] in too far because it’s very difficult to get them back out again. You’ve got to maintain a barrier and a boundary,” William argues, “because if both sides cross it, a lot of pain can come from it.”