Who said "Conscience is a terrible thing."?

This quote is attributed to Lombard.

Conscience is a terrible thing. - Lombard

"Conscience is a terrible thing."

Lombard Wisdom

Character in And Then There Were None

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"We are all condemned men."

"Every man for himself."

"Trust no one on this island."

"The sea surrounding us is like a wall"

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."