Ought vs. should
X asks: I am unable to figure out what the special significance is of not having a ‘moral ought’ in the Indian traditions. If ‘should not’ and ‘must not’ have the same practical consequences as ‘ought not’, that is we are obligated to behave in a certain way, why does it make a difference how it is expressed in our language?
Your question is probably the best way of showing the difficulty we have …