Shaw was at his best as a controversialist. If there was anything silly or anything insincere about his opponent, Shaw would seize on it unerringly to the delight of all those who were on his side in the controversy. ... He was entirely praiseworthy in this sort of way, until he fell a victim to adulation of the Soviet Government and suddenly lost the power of criticism and of seeing through humbug if it came from Moscow. Excellent as he was in controversy, he was not nearly so good when it came to setting forth his own opinions, which were somewhat chaotic until in his last years he acquiesced in systematic Marxism.
Source: Bertrand Russell: Bernard Shaw, 1953
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