In this unique book, celebrated biographer Denis Brian draws on some of the greatest scientific minds of the twentieth century, in pursuit of their distinct views on life, knowledge, and the cosmos. A provocative and revealing interviewer, Brian weaves together the insights and personal stories of a stellar cast of Nobel Prize winners and other luminaries, including Linus Pauling's ill-fated support of Vitamin C as a cure for cancer, Ashley Montagu's explanation of why the sex drive is not innate, and various personal recollections of the making of the atomic bomb, Heisenberg's role in Nazi Germany, and the spy case of Klaus Fuchs.