 This can result in an erosion of a sense of purpose.Also as mentioned in this book, a quote from the psychiatrist Robert Lifton describes how people begin to question their sense that the world is a good place, and they become numb to the threat of a changing climate as result of a crisis of meaning in the continuity of their lives.A quote from the sociologist Ulrich Beck describes that on a societal level, pervasive exposure to risk threatens ontological security and erodes social networks.