>> you've written about president mckinley and you have written out about the president taft and mrs. taft. and just a new book that is coming out that is not i get from oxford, theodore roosevelt. what is it about this era that attracts you? >> well, people use a lot of type and which i must say for handwriting property is very nice. i started studying at yale with a distinction story who just died last week, one of the great historians of the 20th century. they awakened in me, and i just find it the emergence of the modern united states, a party system, the issues they face that are so relevant today. it's a wonderful period with wonderful, funny stories, larger-than-life characters. so i dived in and have never come out and don't intend to come out. >> professor gould, are you a follower -- a fan of tr's? >> very much so. i think with a certain loving perspective i would like to have, i think sometimes people go overboard with different aspects of his life. so i tried in this little book, it's very short, a hundred passionate under 100 pages. the point is to give you the gist of the pre