LONDON (AP) -- Prince Harry has said he had enough material for two memoirs, but he held back because he didn't think his father and brother would "ever forgive" him.
In an interview with British newspaper The Telegraph published Saturday, he also said releasing his memoir wasn't an attempt "to collapse the monarchy. This is about trying to save them from themselves."
"And I know that I will get crucified by numerous people for saying that," he said.
Harry's candid autobiography, "Spare," sold 1.4 million English-language copies on the first day it was published. Many of its revelations and accusations were splashed across the global media this week. In the book, the 38-year-old revealed how his grief at the death of his mother, Princess Diana, affected him, and saw Harry detail his resentment at being the "spare to the heir."
"It could have been two books, put it that way," Harry said in the interview. "But there are some things that have happened, especially between me and my brother, and to some extent between me and my father, that I just don't want the world to know. Because I don't think they would ever forgive me."
Harry also said in the interview he worried about William's children, saying he felt "a responsibility knowing that out of those three children, at least one will end up like me, the spare. And that hurts, that worries me."
He said he felt this way despite William making it clear to him that "his kids are not my responsibility."
Buckingham Palace and Kensington Palace haven't commented on Harry's book or his string of media interviews to publicize it.
FILE - Britain's Prince William, center, his wife Kate, Duchess of Cambridge and Prince Harry arrive for an event at the memorial garden in Kensington Palace, London, Aug. 30, 2017. Prince Harry’s explosive memoir, with its damning allegations of a toxic relationship between the monarchy and the press, is likely to accelerate the pace of change already under way within the House of Windsor following the death of Queen Elizabeth II. (AP Photo/Kirsty Wigglesworth, File)
Members of the British royal family attend the traditional Christmas Day church service, at St. Mary Magdalene Church in Sandringham, England, Dec. 25, 2015. In the foreground, Prince Charles, and Camilla, the Duchess of Cornwall, followed by from left, Prince William, Kate, the Duchess of Cambridge and Prince Harry. Prince Harry’s explosive memoir, with its damning allegations of a toxic relationship between the monarchy and the press, is likely to accelerate the pace of change already under way within the House of Windsor following the death of Queen Elizabeth II. (AP Photo/Matt Dunham, File)
FILE - Britain's Prince William, right, Kate, the Duchess of Cambridge and Prince Harry attend the Service of Commemoration – Afghanistan, at St Paul's Cathedral in London, March 13, 2015. Prince Harry’s explosive memoir, with its damning allegations of a toxic relationship between the monarchy and the press, is likely to accelerate the pace of change already under way within the House of Windsor following the death of Queen Elizabeth II. (AP Photo/John Stillwell, Pool)
FILE - Britain's Prince William and Prince Harry, right, arrive for the statue unveiling on what would have been Princess Diana's 60th birthday, in the Sunken Garden at Kensington Palace, London, July 1, 2021. Prince Harry’s explosive memoir, with its damning allegations of a toxic relationship between the monarchy and the press, is likely to accelerate the pace of change already under way within the House of Windsor following the death of Queen Elizabeth II. (Yui Mok/Pool Photo via AP, File)