History shows that civilisations rise and fall. So where is the west in this cycle? Can the widespread sense of pending crisis - be it economic, environmental or political - be understood in relation to the ideas of Oswald Spengler, Owen Barfield or David Fleming? And can signs of new vitality, vision and participation be found, as if the crisis may also be the birthpangs of a new spirituality and consciousness? Rupert Sheldrake and Mark Vernon explore how a sense of connection and disconnection, excitement and fear, can be traced back to the thought of Isaac Newton and Blaise Pascal. They ask where its possible to discover soul.