I think it comes from really liking literary forms. Poetry is very beautiful, but the space on the page can be as affecting as where the text is. Like when Miles Davis doesn't play, it has a poignancy to it.
“I have written too much history to have faith in it; and if anyone thinks I'm wrong, I am inclined to agree with him.”
“The central question is simply put: What did the president know and when did he know it?”