Says who? You?
> therefore, as an atheist, you might mimic a "cultural" sense of goodness; but since the intent is not from the same source -- you may not pretend to share it. Logically, you are immoral simply because you do not share the same inspiration. This is a direct consequence of "assuredness".
if you want it in mathematical format ;)
Again, your entire argument here is hinged on the assumption that all morality originates from religion and everyone else is just faking it. What you believe is right and everyone else is, by definition, wrong. Give me a break with this "mathematical format" nonsense and condescending smiley faces.