WHAT I BELIEVE
a very considerable effect. They cause a man, for example, to prefer casual prostitutes to a quasi-permanent mistress, because it is necessary to adopt the method which is most easily concealed. They thus keep up the numbers of a very dangerous profession, and secure the prevalence of venereal disease. These are not the objects desired by the moralist, and he is too unscientific to notice that they are the objects which he actually achieves.
Is there anything better to be substituted for this unscientific mixture of preaching and bribery? I think there is.
Men's actions are harmful either from ignorance or from bad desires. "Bad" desires, when we are speaking from a social point of view, may be defined as those which tend to thwart the desires of others, or, more exactly, those which thwart more desires than
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