What comprises good performance? The ability through singing or playing to make the ear conscious of the true content and affect of a composition.
On the same line of reasoning, if Australians were to be Australians, or rather if Australians were as separate from any other nation as Australia from any other land, there would be no jealousy between them on England's account.
If you want something, have it. If you feel like it's forbidden, you'll want it even more. Whenever I have a craving, I go and have it and just make sure I don't have it again the next day.