Who said "Perseverance in pursuit of justice knows no bounds"?

This quote is attributed to Dr. John Watson.

Perseverance in pursuit of justice knows no bounds - Dr. John Watson

"Perseverance in pursuit of justice knows no bounds"

Dr. John Watson Perseverance

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."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."