After theorists around 1960 proclaimed the 'death of ideology', ideological divides and clashes have reemerged with renewed intensity throughout the world, including in the liberal democracies. In the United States they have become particularly venomous. The other side is widely viewed as malicious, irrational or downright stupid, and, often, as barely legitimate. The zeal of the opposing sides is often scarcely less than that which characterized the religious ideologies of old. Indeed, historical religious ideologies have largely been replaced by 'secular religions' or 'religion substitutes'. The book is not another survey of past and present ideologies. It is an attempt to understand the cognitive, emotional and social roots of ideology and ideological fixation. It combines insights from evolutionary psychology regarding the nature of some of our deepest proclivities with a broad sweep through history. .
