I should not put barriers in the way of the acquisition of knowledge by anybody at any age. But in the particular case of sex knowledge there are much weightier arguments in its favor than in the case of most other knowledge. A person is much less likely to act wisely when he is ignorant than when he is instructed, and it is ridiculous to give young people a sense of sin because they have a natural curiosity about an important matter.
Source: Bertrand Russell: Has Religion Made Useful Contributions to Civilization? 1930.
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