People with what we call mental illness can indeed serve well, and people who have no discernible mental illness - and that may be true of Trump - may not be able to serve, may be quite unfit. So it isn't always the question of a psychiatric diagnosis. It's really a question of what psychological and other traits render one unfit or dangerous.

As a kid I was fascinated with sports, and I loved sports more than anything else. The first books I read were about sports, like books about Baseball Joe, as one baseball hero was called.

I don't have the feeling that as a very young person I read books that absolutely made their mark on my mind.

I'm a Brooklyn boy. I was born in Brooklyn, New York, and raised there, and spent most of my childhood there.

There are people who believe that there should be a standard psychiatric examination for every presidential candidate and for every president. But these are difficult issues because they can't ever be entirely psychiatric. They're inevitably political as well. I personally believe that ultimately ridding the country of a dangerous president or one who's unfit is ultimately a political matter, but that psychological professionals can contribute in valuable ways to that decision.

Yes, I've been very preoccupied with the survivor all through my work.

When I was still in my psychiatric residency training in New York City, I was subjected to the doctor draft of that time, during the early fifties, at the time of the Korean War.