We don't need heavy-handed psychological analysis to understand Trump. Quite simply, DJT is an Asshole. Not a Madman but an Asshole. Most insightful and accessible is the analysis in a book titled "Assholes: A Theory of Donald Trump." DJT personifies a particular personality type (which includes Napoleon Bonaparte among other high-flyers; remember where Napoleon ended his years, exiled on a remote island). The book is a quick read and available at fine book stores including Amazon.