Full Idea
Kripke gives an account of proper names from which it follows that Goliath (the statue) cannot be identical the lumpl (the clay), ..because if a proper name denotes a thing in the actual world, then it denotes that same thing in non-actual situations.
Gist of Idea
If Kripke names must still denote a thing in a non-actual situation, the statue isn't its clay
Source
comment on Saul A. Kripke (Naming and Necessity lectures [1970]) by Allan Gibbard - Contingent Identity III
Book Reference
-: 'Journal of Symbolic Logic' [-], p.193
A Reaction
This strikes me as a powerful criticism of Kripke's claim - and has led to extensive discussion which I will now have to pursue. Watch this space.