Mediocrity knows nothing higher than itself; but talent instantly recognizes genius. - Arthur Conan Doyle

All other men are specialists, but his specialism is omniscience.

All right, Watson. Don’t look so scared,” he muttered in a very weak voice. “It’s not as bad as it seems.”
“Thank God for that!”
“I’m a bit of a single-stick expert, as you know. I took most of them on my guard. It was the second man that was too much for me.”
“What can I do, Holmes? Of course, it was that damned fellow who set them on. I’ll go and thrash the hide off him if you give the word.”
“Good old Watson!(...)

Life, it turns out, is infinitely more clever and adaptable than anyone had ever supposed.