I could do something worse than kill him if I chose." "For me ?" said Donna Tullia.

"What would you do for me ?" She smiled sweetly, willing to use all her persuasion to extract his secret.
"I could prevent Don Giovanni from marrying the Astrardente, as he intends to do," he answered, looking straight at his companion.
"How in the world could you do that ?" she asked, in great surprise.
"That, my dear friend, is my secret, as I said before.

I cannot reveal it to you at present." "You are as dark as the Holy Office," said Donna Tullia, a little impatiently.

"What possible harm could it do if you told me ?" "What possible good either ?" asked Del Ferice, in reply.

"You could not use it as I could.