Mohamad Jebara grew up in Ottawa, Canada, the son of Lebanese immigrants. He, and they, were “cultural Muslims.” But he soon became a scholar of Islam, and a philologist. He is a man of formidable learning, and he has a gift for imparting what he knows to a general audience. From ages ten to twelve, he memorized the Koran. It is still there, in his head. He practices while driving or working out. His new book is “The Life of the Qu’ran.” Jay asks him some basic questions, questions to which many may like to know the answers. An interesting and illuminating confab.