Who said "Some truths are too terrible to speak."?

This quote is attributed to Vera Claythorne.

Some truths are too terrible to speak. - Vera Claythorne

"Some truths are too terrible to speak."

Vera Claythorne Truth

Character in And Then There Were None

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"Vera reflected on how past mistakes can define one's entire existence"

"She understood that fear was her constant companion on the island"

"I have no friends. I have never had friends."

"The sea is a wonderful place."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."