Who said "All this is very mysterious and rather grim."?

This quote is attributed to Dr. John Watson.

All this is very mysterious and rather grim. - Dr. John Watson

"All this is very mysterious and rather grim."

Dr. John Watson Fear

Character in The Adventures of Sherlock Holmes

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"I am not quite so dense as you make me out to be."

"Holmes is a law unto himself."

"This is indeed a mystery."

"I have nothing to do today. My practice is never very absorbing."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."