Who said "Fear itself is the greatest danger on the moor."?

This quote is attributed to Dr. John Watson.

Fear itself is the greatest danger on the moor. - Dr. John Watson

"Fear itself is the greatest danger on the moor."

Dr. John Watson Fear

Character in The Hound of the Baskervilles

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"I am not a very good subject for a novelist."

"The greatest happiness the greatest number."

"We are not beaten yet."

"Justice, however delayed, is not denied."

"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."