To prevent crime there are therefore two requisites : one is to make crime contrary to self-interest, and this is a matter for the criminal law and the police ; the other is to give men that degree of self-control and sound judgement which will enable them to act in accordance with their own interests - this is a matter for the psychologist. But in neither department has the moralist anything useful to contribute
Source: Are criminals worse than other people? In: Mortals and Others, v.1, 1975
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