Shing-Tung Yau is the William Caspar Graustein Professor of Mathematics at Harvard University, where he has served on the faculty since 1987. He is the winner of the Fields Medal, the National Medal of Science, the Crafoord Prize, the Veblen Prize, the Wolf Prize, and a MacArthur Fellowship. A member of the National Academy of Sciences, Yau has received honorary degrees from ten universities. He is also the director of six mathematical institutes in China and Hong Kong. Yau has written and edited more than twenty books and also edits numerous mathematics journals. He lives in Cambridge, Massachusetts.