"That's impossible."
"How do you mean, impossible? I thought you knew it and were going to tell me everything!"
"Everything, but not that."
"But . . ."
"Later on."
"You're mad! Why?"
"I have no proofs. Later, when you are free, we will hunt together. Besides, what's the good? And then, really, I can't tell you."
"You're afraid of him?"
"Yes."
"Very well," said Lupin. "After all, that's not the most urgent matter. As to the rest, you've made up your mind to speak?"