should we consider the last supper of da vinci be recalled as christian relics?

Not sure about Da Vinci religious conviction. But just some people try to make money in a negative way, I think the value of an art should not go down. That would be giving in to reckless individuals who's out there to destroy truth and beauty.

I am not quite sure what you mean by Christian relics. Da Vinci painted the last supper following traditions and visions of the time in which he lived. It should be viewed as a piece of art. Brown's book is a work of fiction. He states this at the beginning of the book, therefore the book should be regarded purely as a work of fiction.