timothy eagan from "the new york times" wrote an editorial on the subject late last month contributing his narcissistic or or -- behavior to sleep deprivation. trump himself said he doesn't get much sleep telling reporters he typically gets anywhere from three to four hours a night raid but does that mean he suffers from sleep deprivation? >> it's conceivable that someone who is sleep-deprived is going to make interesting comments and not comments that they mean to? studies have shown people are more susceptible to say something they regret later. i went to dr. robert silverman's office in westchester. ideally a person should snooze for about seven hours a night. not for and certainly not three hours. >> the brain needs sleep. needs rest and clearly if you are sleeping two, three or four hours like some of the candidates indicated that's not ample. as a matter fact your brain needs to shrink and it needs to detox so it needs to shrink in size and go back to a smaller size. >> i asked him how much do you sleep? he said about five and i said maybe he should take your medicine then. it wa

this morning it's our pleasure to have timothy eagan.onal best seller the big burn. tim's current book just released last week is entitled to immore eat irishman who became an american hero, a biography of thomas mar. he's sadly been largely forgotten since his death so tim what starked your interest in mar. >> well, thank you, bruise, it's great to be here in this lovely arizona morning, this huge crowd, i can't believe it. you people love books. [laughter] >> also i've been told -- a number of times i've been told this is the best book festival in the world. [cheers and applause] >> but as someone who is interested in getting the truth right, i've been to -- i haven't been to every book festival in the world but my experience is it passes that task. i would like to think that i know my people's history. i'm one of seven kids, one after the other, the sort of classic irish family. i would like to think we knew our history and i was standing outside -- even though i thought i knew our history i'm -- irish american and i was standing outs