The Wolf Prize, awarded by the Wolf Foundation in Israel, often goes to mathematicians who are in their sixties or older. That is to say, the Prize honours the achievements of a lifetime. This invaluable book features bibliographies, important papers, and speeches (for example at international congresses) of Wolf Prize winners, such as R Bott, A P Calderon, M G Krein, H Lewy, L Lovasz, J Moser, I Piatetski-Shapiro, Y Sinai, C L Siegel, J P Serre, E M Stein and O Zariski. This is the first time that lectures by some Wolf Prize winners have been published together. Since the work of the Wolf laureates covers a wide spectrum, much of the mathematics of the twentieth century comes to life in this book.