Jeffrey. Before i get started i want to encourage everyone to check out upcoming book schedule on harvard. Com events. For example, on june 25th ash carter will discuss his new book inside the five sided box lessons from a lifetime on pentagon on july 8th charles will present one giant leap a mission that flew us to the moon. After tonight talk well have questions from the audience. But pleased to have booktv cspan knowing youll be recorded and please wait a moment for the microphone to come over to you before asking your question. After the q and a well have a signing here at this table we have copies of the young castor available for purchase in next room. Were grateful to you for buying books here at Harvard Bookstore and your choice supports author series and independent book stores so rewith thank you for that and we thank you for silencing your cell phones for the remainder of the evening so now im very pleased to introduce tonight speaker presenting acclaimed new book young Cast