[A gentleman outwardly, truly, but it's impossible to keep a mind like that from reaching conclusions deeper than he would state. In some ways, her own rival's capacity for cognitive dissonance was a gift of his. Moriarty's mind doesn't - Beatrice assumes, probably couldn't - work that way. At least he was polite enough to tip his hand before playing it.]

He had his charms. His skills at deduction were not among them. There's a certain...line between people like us and people like him. His weakness was always that there were certain things he wouldn't admit a human could do, because he couldn't bring himself to acknowledge the reasons behind them. An experienced investigator like Mr. Holmes, on the other hand, has no such luxury of blissful ignorance, any more than the criminals he pursued did.