Fire and Fury: Inside the Trump White House by Michael Wolff:
Ultimately Trump may not be that different in his fundamental solipsism from anyone of great wealth who has lived most of his life in a highly controlled environment. But one clear difference was that he had acquired almost no formal sort of social discipline—he could not even attempt to imitate decorum. He could not really converse, for instance, not in the sense of sharing information, or of a balanced back-and-forth conversation. He neither particularly listened to what was said to him nor particularly considered what he said in response (one reason he was so repetitive). Nor did he treat anyone with any sort of basic or reliable courtesy. If he wanted something, his focus might be sharp and attention lavish, but if someone wanted something from him, he tended to become irritable and quickly lost interest. He demanded you pay him attention, then decided you were weak for groveling. In a sense, he was like an instinctive, pampered, and hugely successful actor. Everybody was either a lackey who did his bidding or a high-ranking film functionary trying to coax out his attention and performance—and to do this without making him angry or petulant.