US election: What Trump interviews with biographer tell us
When Mr Trump is pushed on why he is "always in the present" he tells the journalist: "The problem people have with me is that I'm not in the past, I'm a person that thinks to the future. "I learn from the past but I don't focus on the past, which I think is a very important lesson," he says, before adding that he "doesn't reflect and he doesn't want anyone else to". In another interview he says: "I don't like to analyse myself because I might not like what I see."
"I was a very rebellious kind of person," Mr Trump says about his childhood in Queens, New York. "I don't like to talk about it, actually. But I was a very rebellious person and very set in my ways. "I loved to fight. I always loved to fight," he says, before adding: "All types of fights. Any kind of fight, I loved it, including physical."
On seeing his name in print for the first time (when he hit a home run as a promising young baseball player), he says: "Seeing my name in print felt good, it was very interesting."
As part of his research, Mr D'Antonio also spoke to Mr Trump's ex-wife Ivana. She told him a story about a skiing trip they took in Colorado soon after they began dating.
Mr Trump, who was unaware that Ivana was a confident skier, went down a slope and called for his girlfriend to follow him, saying: "Come on, baby. Come on, baby."