Blaise Pascal, the great French philosopher and mathematician, once said that there are only two kinds of people in the world: seekers and non seekers. Either we are pilgrims looking for answers in order to make sense of our world, or we are wanderers who have turned off onto byways of distraction or despair, alienating ourselves from wonder. If you are reading this book, you probably are a seeker. That’s good. To be alive is to seek. If you think you already have good answers to the great questions,