But at this point I shall be met by an argument which must be faced at the outset. What if a boy’s curiosity is morbid or perverted? What if he is interested in obscenity, or in accounts of tortures? ...
Almost always, the whole attraction of such knowledge consists in the fact that it is forbidden; in a certain number of cases it is connected with some pathological mental condition which needs medical treatment. But in no case is prohibition and moral horror the right treatment.
Source: On Education, especially in early childhood, 1926, Pt. 2：Education of character, chap. 14: General principles
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