From page 41:
In that sense, too, fascism is more plausibly linked to a set of "mobilizing passions" that shape fascist action than to a consistent and fully articulated philosophy. At bottom is a passionate nationalism. Allied to it is a conspiratorial and Manichean view of history as a battle between good and evil camps, between the pure and the corrupt, in which one's own community or nation has been the victim. In this Darwinian narrative, the chosen people have been weakened by political parties, social classes, unassailable minorities, spoiled rentiers, and nationalist thinkers who lack the necessary sense of community. These "mobilizing passions," mostly taken for granted and not always covertly argued as intellectual propositions, form the emotional lava that set fascism's foundations.
Before I started this book, I was dismissive of descriptions of the political movement around our current president as fascist. After reading this, I'm less so.