Contentious and divisive, Stephen Wolfram is obviously a singularly brilliant man. He received a Ph.D. in particle physics from Caltech at age 20, and received a MacArthur award age 21. Inspired by cellular automata he then spent a decade writing a whole new science. He is also the founder and CEO of Wolfram Research the creator of Mathematica and Wolfram|Alpha.
Here he gives a lecture decribing his New Kind of Science
Stephen Wolfram: A New Kind of Science