The vanguard group is ideologically more advanced than the mass; the latter is acquainted with the new values, but insufficiently. While in the former a qualitative change takes place which permits them to make sacrifices as a function of their vanguard character, the latter see only by halves and must be subjected to incentives and pressures of some intensity; it is the dictatorship of the proletariat being exercised not only upon the defeated class but also individually upon the victorious class.
–Che Guevara, Man and Socialism in Cuba (page 27)