Who said "Death brings clarity to the living."?

This quote is attributed to Justice Wargrave.

Death brings clarity to the living. - Justice Wargrave

"Death brings clarity to the living."

Justice Wargrave Death

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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."