I would say that classism often becomes paternalistic on the part of the "upper" class, so I see a fair amount of overlap between classism and paternalism.

And I actually think that some ideas are better than others, and so are some versions of morality. And I think that those who have the better systems should teach them. But they need to do so with a fair amount of sensitivity and humility, not with arrogance.

But then, I'm not the one preaching against classism.