But I abhor the dull routine of existence.
I crave for mental exaltation.

That is why I have chosen my own particular profession,--or rather created it, for I am the only one in the world." "The only unofficial detective ?" I said, raising my eyebrows.
"The only unofficial consulting detective," he answered.

"I am the last and highest court of appeal in detection.

When Gregson or Lestrade or Athelney Jones are out of their depths--which, by the way, is their normal state--the matter is laid before me.

I examine the data, as an expert, and pronounce a specialist's opinion.