Who said "We all have the capacity for evil."?

This quote is attributed to Justice Wargrave.

We all have the capacity for evil. - Justice Wargrave

"We all have the capacity for evil."

Justice Wargrave Power

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."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."