dr. nassier gomi. hello, doctor. >> hi. >> beautiful people. now, sir, you have a bold proposition. >> yes. >> in your new book. first you are a professor of psychiatry, tufts medical centre in boston. you also have a position at harvard medical school, i believe. and you direct the mood disorders program at tufts medical in boston. you have a new book called a first rate madness. uncovering the links between leadership and mental illness. you say in times of crisis it's not such a bad thing for our leaders to be a little unhinged. >> that's right. >> stephen: so you're saying you should have a mad man with his finger on the button. >> to keep us safe. >> that's one way of putting it. >> stephen: i can't think of another. what do mean. why is-- why is a first rate madness a good idea? >> well, what i found was that a lot of our greatest leaders have mental illnesses or are mentally abnormallal and a lot of our abnormal and a lot of our worst leaders are mentally healthy. and there's evidence from different studies and psychology and psychiatry