According to Furlong, Evola developed "the law of the regression of castes" in Revolt Against the Modern World and other writings on racism from the 1930s and World War II period.
Menurut Furlong, Evola mengembangkan "hukum regresi kasta" di dalam "Revolt Against the Modern World" dan tulisan-tulisan lain tentang rasisme sejak periode tahun 1930an dan Perang Dunia II.