Who said "You have done well to come, and still better to come armed."?

This quote is attributed to Sherlock Holmes.

You have done well to come, and still better to come armed. - Sherlock Holmes

"You have done well to come, and still better to come armed."

Sherlock Holmes

Character in The Hound of the Baskervilles

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"The world is full of obvious things which nobody by any chance ever observes."

"The moor is a dangerous place, Watson."

"I cannot but think that you are justified in your caution."

"One should always look for a possible alternative."