In Let There Be Light, Howard Smith, a research astrophysicist and traditionally observant Jew, explores how modern scientific understandings of the cosmos complement Judaism's ancient mystical theology, the Kabbalah. He argues that science and religion are not only compatible, but that a healthy, productive dialogue between the two sheds light on ethics, free will, and the nature of life, while at the same time rejecting fundamentalist misinterpretation and the pseudoscience of creationism. Written for a general audience, yet supported by the most current and accurate scientific research, the book discusses topics such as modern quantum mechanics and mystical notions of awareness; how Kabbalah's ten sefirot mirror the developing phases of an inflationary universe; and the surprising parallels that exist between the Big Bang theory and Kabbalah's origin theory. Smith delves into complex ideas without resorting to jargon or mathematical equations, creating an intelligent, authoritative work accessible to all readers.