Why the most exciting parts of being alive are creative moments. For the renowned physicist and writer Alan Lightman, dreaming up a fictional character or discovering a new equation leads to unparalleled exhilaration. In this interview, Dr. Lightman shares his definition of time, and discusses Albert Einstein's work, and the joys of creating. This is a bonus episode of “It’s About Time.” Hosted by Rebecca Asoulin and Eoin O'Carroll. Visit csmonitor.com/time for the full transcript, episode art, and links to Dr. Lightman’s books that are mentioned in this episode.