Who said "The human conscience is both a strength and a weakness."?

This quote is attributed to Justice Wargrave.

The human conscience is both a strength and a weakness. - Justice Wargrave

"The human conscience is both a strength and a weakness."

Justice Wargrave Philosophy

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."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."