Ideologies are administered by bureaucracies that control their meaning. They develop systems, they decide what is right- and what is wrong-thinking, who is faithful and who is a heretic; in short, the manipulation of ideologies becomes one of the most important means for the control of people through the control of their thoughts.

Erich Fromm (1900–1980) American psychoanalyst and social philosopher

May Man Prevail?, ch. 4 (1961)