Who said "Keep, therefore, the secret, as thou valuest thy life!"?

This quote is attributed to Roger Chillingworth.

Keep, therefore, the secret, as thou valuest thy life! - Roger Chillingworth

"Keep, therefore, the secret, as thou valuest thy life!"

Roger Chillingworth

Character in The Scarlet Letter

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"Let the black flower blossom as it may!"

"Behold, I am not! If that be thy sole objection, I may yet be of service."

"One token of thy shame, Hester,—that on thy breast!"

"Art thou capable of turning this to profit, both monetary and ecclesiastical?"