In these 13 essays and one remarkable extended interview, Professor Stephen Hawking reveals an amazing array of possibilities for understanding our universe. 

Building on his earlier work, Hawking discusses imaginary time, how black holes can give birth to baby universes, and scientists’ efforts to find a complete unified theory that would predict everything in the universe. With his characteristic mastery of language, his sense of humor and commitment to plain speaking, Stephen Hawking invites us to know him better - and to share his passion for the voyage of intellect and imagination that has opened new ways to understanding the very nature of the cosmos.