We live in a time of great uncertainty about the future. Those heady days of the late twentieth century, when the end of the Cold War seemed to be ushering in a new and more optimistic age, now seem like a distant memory. During the last couple of decades, we've been battered by one crisis after another and the idea that humanity is on a progressive path to a better future seems like an illusion.

It is only now that we can see clearly the real scope and structure of the profound sh ...