Who said "In the midst of life we are in death."?

This quote is attributed to Justice Wargrave.

In the midst of life we are in death. - Justice Wargrave

"In the midst of life we are in death."

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."