Who said "No one can escape their own conscience."?

This quote is attributed to Justice Wargrave.

No one can escape their own conscience. - Justice Wargrave

"No one can escape their own conscience."

Justice Wargrave Truth

Character in And Then There Were None

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"Murder is justified when the victim deserves it."

"The guilty cannot hide forever."

"Justice must be served."

"Every man and woman is alone."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."