What would you think if you met someone who stated convincingly that they believe stealing was wrong, and yet you knew that they were prone to theft, and did so in an entirely nonchalant manner?
And when asked after stealing something whether they still believe stealing is wrong, they reply emphatically that, indeed, it is. That people shouldn’t steal. Yet they show no inclination to change their stealing behaviour, not any apparent negative attitude towards their own acts of stealing.
What would you think? Maybe that there was something somehow wrong with them? Or perhaps something wrong with their moral conviction?
It certainly seems something is awry in this situation. For it seems intuitive that in order for someone to state that some act is morally wrong, they must feel some compulsion to behave in accordance with that belief. Surely, they can experience weakness of the will, or they can have conflicting moral proclivities, but they must at least feel some motivation to act in accord with the moral norm, even if that motivation is eventually overwhelmed by other desires.
As such, it seems somehow fundamentally inconsistent for them to say X is wrong and yet be either entirely indifferent to X happening, or for them to do X with indifference. Some even think it’s logically inconsistent, or even logically impossible, for them to say they believe X is wrong and feel indifference towards X.
However, if this notion of ‘internalism’ is true – the notion that moral beliefs entail some motivational component – then it raises a hairy pickle. Namely, how it is that a mere belief can carry with it a built-in motivational compulsion? What kind of strange beliefs moral beliefs would be were this the case.