I assume you are referring to the last line. I cannot offer you an exact quote or source, but basically Evola thought that in the post war period Westerners had exchanged the idea of great causes for cheap consumer goods and a comfortable bourgeois existence. Among those few Westerners who had still not given up on all higher interests, Evola identified another problem. This next part is something I read from Revolt Against the Modern World recently, although I can't remember the exact chapter. To paraphrase, he said that he did not think it was possible to find even a single Westerner today capable of reacting against or even fully understanding anything more than a single aspect of the modern world. There were people who reacted against consumerism or people who reacted against anti-nationalism, but there were no people who could understand and react to the full depth of the problem as a whole. Evola also had a low opinion of the forms that reaction had taken in his day, namely the publication of pamphlets and party programs. The lack of interest in the inner dimension and the lack of attempts at inner revolution doomed political reaction to a fate of transience, ineffectiveness and counter-productive integration in the world of bourgeois politics.

In other words, for Evola, the post war period presented a problem of lack of numbers, lack of interest, lack of character, lack of understanding and lack of appropriate action.