"The collapse of the Soviet Union represents more than a geopolitical watershed; as time passes, historians will increasingly see it as the end of an intellectual era as well. Leninism is in worldwide retreat, with few serious defenders. But for most of this unhappy century a disappointingly large number of Western intellectuals viewed the Soviet system as a plausible alternative to the Western model. To be sure, few supported the vast crimes of Stalin, but many made careful, casuistic distinctions between his evil misrule and the alleged humanism of Lenin's original Bolshevism."