In "A Puzzle about Belief,"[1] Saul Kripke argues that the application of the disquotational theorem can yield a paradox on its own, without appeal to the substitution principle, and that this may show that the problem lies with the former, and not the latter.
Suppose that, Pierre, a Frenchman, comes to believe that (1) "Londres est jolie" (London is pretty), without ever having visited the city.
Suppose that Pierre assents to the proposition "Paderewski had musical talent", perhaps having heard that this man was a famous pianist.
With the disquotational principle, we can deduce that Pierre believes the proposition that Paderewski had musical talent.
The disquotation principle allows us to deduce that Pierre believes the proposition that Paderewski had no musical talent.