  The words ‘one’ and ‘same’ are ambiguous, William says: "when I say Plato and Socrates are the same I might attribute identity of wholly the same essence or I might simply mean that they do not differ in some relevant respect."  William's newfound ambiguity is the seed of his second theory of universals. The stronger sense of ‘one’ and ‘same’ applies to Peter/Simon and Saul/Paul (we would say Cicero/Tully), who "are one and the same according to identity" (Sen 236.123). As for Plato and Socrates: