Princes William and Harry have spoken at length about the death of their mother, Princess Diana, in an interview to be broadcast on American television.
The princes spoke about their mother, relationships and ambitions
Prince Harry said the decade since her death had passed "really slowly". "Whatever happened in that tunnel...you know no-one will ever know," he added.
His older brother told the programme: "It has been a long time. There's not a day goes by I don't think about it."
Extracts of the NBC News interview were released ahead of it airing on 18 June.
Princess Diana was killed in a road crash in the Pont de l'Alma tunnel in Paris on 31 August, 1997.
The media coverage that followed ever since had made it difficult for them, Prince Harry said.
He said it was "a constant reminder to both of us and everybody else".
"And therefore I think when you're being reminded about it, it does take a lot longer and it's a lot slower."
"It's weird because I think when she passed away there was never that time, there was never that sort of lull.
"There was never that sort of peace and quiet for any of us - the fact that her face was always splattered on the paper the whole time."
Prince William added: "Just for my personal opinion, when you knew somebody or someone that important to you, you always think about you know.
"I mean so after it happened we were always thinking about it."
The brothers also told interviewer Matt Lauer why they were organising a memorial concert to mark the 10th anniversary of their mother's death and how they will remember her on the day.
On his mother's desire for him to lead as normal a life as possible, Prince Harry said: "I think she'd be happy in the way that we're going about it, but slightly unhappy about the way the other people were going about it."
He said they did accept they had certain responsibilities but were often being told "Look you're not normal so stop trying to be normal".
"But within our private life, and within certain parts of our life, we want to be as normal as possible."
Prince William also discussed relationships, saying he came with a lot of "baggage".
"I don't want to be liked by someone just because of who I am. You know, I don't want the sycophantic, you know, people hanging around."
The brothers were also asked what they would have aspired to be, had they not been royalty.
William, second in line to the throne, said as a child he had wanted to be a policeman, but now would have liked to fly a UN helicopter.
Meanwhile, Harry, who is third in line, said he would have been a charity worker and a safari guide in Africa.