Dudley Herschbach joined Harvard as a Professor of Chemistry in 1963. The major path of his research developed experiments and theory to elucidate molecular dynamics of reaction dynamics in single collisions. That work, considered "lunatic fringe" at its inception, opened up a wide frontier. Emeritus at Harvard since 2003, he is now enjoying a "perpetual sabbatical." His current research includes strategies for quantum computation; transformations of electronic structure induced by superintense laser fields; and generic properties of phase transitions in molecular fluids. He also continues to give, in visits to schools and other public venues, evangelical talks about science and science education.