Nixon biographer John Farrell said on Sunday that historians in the future will thank god for President Trump’s tweets because they will provide them with a window into the president’s personality.

“There’s a little bit of similarity in listening to Nixon’s tapes and reading President Trump’s tweets in that you’re sort of seeing the unvarnished presidential id,” Farrell said on CBS News’ “Face the Nation.”

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The biographer then added that future historians will be “down on their knees, praying 'God thanks' every night because President Trump insists on tweeting at a time when nobody writes letters or keeps diaries anymore.”

Farrell’s comments come after Trump tweeted a video of himself beating up an individual with a CNN logo superimposed over his face.

Trump has ramped up his attacks on the press this week, mostly using the social media platform.