Michael Wolff is the author of "Fire and Fury," an unflattering look at the Trump presidency. (Photo: Screen shot from NBC's "Today" show)

(CNSNews.com) - Ignoring a cease and desist order from President Trump’s attorneys, the publisher of "Fire and Fury," Michael Wolff's unflattering new book about President Donald Trump, is now available in bookstores, four days ahead of schedule.

"Actually, what I say is, where do I send the box of chocolates?" Wolff said Friday morning in an interview on NBC's "Today" show.

He said Trump's effort to quash publication is a good thing: "Not only is he helping me sell books, but he's helping me prove the point of the book. I mean, this is extraordinary that a president of the United States would try to stop the publication of a book."

Trump has tweeted that he never spoke to Wolff for the book.

“I authorized Zero access to White House (actually turned him down many times) for author of phony book!” Trump wrote Thursday night. “I never spoke to him for book. Full of lies, misrepresentations and sources that don’t exist. Look at this guy’s past and watch what happens to him and Sloppy Steve!”

"I absolutely spoke to the president,” Wolff said on Friday. “Whether he realized it was an interview or not, I don't know, but it certainly was not off the record.”

Wolff said he spoke to Trump after the inauguration. He said he spent "about three hours" with Trump over the course of the campaign and in the White House.

"So my window into Donald Trump is pretty significant," Wolff said. “But even more to the point...and this was really sort of the point of the book, I spoke to people who spoke to the president on a daily, sometimes minute-by-minute basis.”

Wolff said he had one question on his mind when he started to write the book, and then he listed three questions: "What is it like to work with Donald Trump? How can you work with Donald Trump? And...how do you feel having worked with Donald Trump?"

Asked about Donald Trump's claim that the book is full of lies, Wolff shrugged it off, saying, "Donald Trump will attack, he will send lawyers' letters. This is a 35-year history of how he approaches everything."

Wolff said he has recordings and notes of at least some of his interviews and is "certainly and absolutely, in every way, comfortable with everything I have reported in this book."

He also said his "credibility is being questioned by a man who has less credibility than perhaps anyone who has ever walked on earth at this point."

Asked about the claims in his book -- that Trump is unintelligent, erratic, and difficult to work for -- Wolff repeated what he wrote, that "100 percent of the people around him" question his fitness for office.

"I will tell you the one description that everyone gave, everyone has in common -- they all say he is like a child. And what they mean by that is, he has a need for immediate gratification. It's all about him. I mean this...cease and desist letter, I mean I still have sources in the White House, and I know everybody was going (Wolff laughs) – ‘We should not be doing this; this is not smart.’ And he just insists, he just has to be satisfied in the moment.”

Wolff said in the White House, people call Trump a moron, an idiot: "Actually there's a competition to sort of get to the bottom line here of who this man is. Let's remember, this man does not read, does not listen. So he’s like a pinball just shooting off the sides.”

Pressed on his claim that Trump is repeating himself in shorter and shorter periods of time, Wolff said he's now giving the same three stories every ten minutes.

“What are you arguing there?" anchor Savannah Guthrie asked.

"I will quote Steve Bannon,” Wolff replied. "He's lost it."

After Wolff's "Today" show interview, President Trump tweeted: "Well, now that collusion with Russia is proving to be a total hoax and the only collusion is with Hillary Clinton and the FBI/Russia, the Fake News Media (Mainstream) and this phony new book are hitting out at every new front imaginable. They should try winning an election. Sad!"