Jan van Leeuwen is professor at the Department of Information and Computing Sciences at Utrecht University. He received a Ph.D. in mathematics in 1972 from the same institution. After having held several positions in computer science in the US, he returned to Utrecht as a faculty member in 1977. He was head of department from 1977 to 1983 and from 1991 to 1994, and served as dean from 1994 to 2009. His research interests extend to many branches of the theory and philosophy of computer science. He is a member of the Academia Europae, is the first recipient of a Distinguished Lorentz Fellowship Prize in the Netherlands, and holds an honorary doctorate from RWTH Aachen University. For more information, http://www.cs.uu.nl/staff/jan.html.