To call the Form [of the Good] eternal is misleading:....

“ To call the Form [of the Good] eternal is misleading: that something lasts forever does not render it any the better, any more than long-enduring whiteness is whiter than ephemeral whiteness. ”

Alasdair MacIntyre

From : A Short History Of Ethics: A History Of Moral Philosophy From The Homeric Age To The Twentieth Century