The White House has dismissed the book as "tabloid gossip" full of "lies" and some commentators have cast doubt on Wolff's credibility.
And, even in defending Trump, the former ExxonMobil chief executive admitted he has had to learn how to relay information to a president with a very different decision-making style.
Green: Look, here on planet Earth we're all rightly astonished that Bannon holds (held?) presidential ambitions. "So I've had to spend a lot of time understanding how to best communicate with him". "I am the only person to date to conduct a global effort to preach the message of Trump and Trumpism; and remain ready to stand in the breach for this president's efforts to make America great again".
White House officials described the president as furious at Bannon's criticisms, laid out in an explosive new book that quoted the former aide as questioning Trump's competence and describing a June 2016 meeting at Trump Tower between Donald Trump Jr., Trump campaign aides and a Russian lawyer as "treasonous" and "unpatriotic".
The election of Donald Trump was a shot heard around the world.
It could go down as the greatest unintentional marketing campaign in history. The split between five-star reviews and one-star reviews was clearly unusual, with an uncommonly high percentage of reviews left by unverified purchasers.
He added: 'What they mean by that is he has the need for instant gratification.
"People have been calling about it all day", she said.
Maeve McGale, a 19-year-old bookstore employee with fading purple hair, swept the floors wondering if anyone would even show on such a frigid night (hasn't anyone ever heard of a Kindle?).
Mr Trump's lawyers had tried to block publication of Fire and Fury: Inside the Trump White House by Michael Wolff, which has now gone on sale early.
As a new year gets started, there are already more than enough reasons to worry about the state of the union in the era of Donald J. Trump and his merry band of confusion-spinners. And Rebekah Mercer, one of the major financial patrons of Breitbart (and Bannon), said publicly that she and he are not on speaking terms and she's not going to be funding what he does anymore.
"I think one of the interesting effects of the book so far is a very clear emperor-has-no-clothes effect", Wolff said in an interview broadcast on Saturday.
Trump hailed that move on Twitter Friday, saying: "The Mercer Family recently dumped the leaker known as Sloppy Steve Bannon".
On Thursday, the White House said it was banning personal devices, including mobile phones, from the West Wing, citing security concerns. The biggest revelation from the book came from a series of interviews done with Steve Bannon, the former right-hand man to Trump who worked in both the campaign and briefly in the White House. But now it but has become a vehicle for Bannon's own political ambitions, including clashes with the Republican Party establishment and national committee that he appears to be targeting for a takeover.
"Lawmakers were saying they have been very concerned about this, the president's dangerousness, the dangers that his mental instability poses on the nation", Lee told CNN.
"I like when he comes up with a nickname and then acts like it was a thing", Kimmel joked.
To combat germs, and poison, Trump imposed a strict set of rules which amounted to: "Nobody touch anything, especially not his toothbrush". "But then there's the second hurdle that not only does he not read, he doesn't listen", he said.
Trump's attorney has demanded a halt to publication of the book or excerpts.