All the governments of the world adopt elaborate methods of concealing truths which they consider undesirable, and inflict various forms of penalty upon those who spread knowledge which is thought bad for the population This applies especially to knowledge of the kind which is considered seditious, and the kind which is considered obscene. I shall not give instances, since, if I did, I should myself fall under the ban of the law.

Bertrand Russell (1872-1970) English mathematician and philosopher

Education and the Social Order [Education and the Modern World], ch. 1 “The Individual versus the Citizen” (1932)
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