Look back at history - those who guided the revolution in the time of its culmination never kept their leading positions long after the turning point.
Leon TrotskyThe fall of the present bureaucratic dictatorship [in the Soviet Union], if it were not replaced by a new socialist power, would thus mean a return to capitalist relations with a catastrophic decline of industry and culture.
Leon TrotskyThe basis of bureaucratic rule is the poverty of society in objects of consumption, with the resulting struggle of each against all. When there is enough goods in a store, the purchasers can come whenever they want to. When there is little goods, the purchasers are compelled to stand in line. When the lines are very long, it is necessary to appoint a policeman to keep order. Such is the starting point of the power of the Soviet bureaucracy. It "knows" who is to get something and who has to wait.
Leon Trotsky