Last night, I was reading a book that contained this passage about Mussolini, and it took me an hour to fully grasp what this meant:
"[his 2-year stay in Switzerland] had initiated Mussolini to a form of revolutionary socialism based not on materialism or orthodox Marxism, but on a cocktail of voluntarists and anti-rational principles derived from Pareto, Le Bon, Nietzsche, and Sorel"