“‘You have paid me several compliments, Mr. Moriarty,’ said I. ‘Let me pay you one in return when I say that if I were assured of the former eventuality I would, in the interests of the public, cheerfully accept the latter.’
“‘I can promise you the one, but not the other,’ he snarled, and so turned his rounded back upon me, and went peering and blinking out of the room.
“That was my singular interview with Professor Moriarty. I confess that it left an unpleasant effect upon my mind. His soft, precise fashion of speech leaves a conviction of sincerity which a mere bully could not produce. Of course, you will say: ‘Why not take police precautions against him?’ The reason is that I am well convinced that it is from his agents the blow will fall. I have the best proofs that it would be so.”
“You have already been assaulted?”