Who said "I've done things - things I'm not proud of."?

This quote is attributed to Armstrong.

I've done things - things I'm not proud of. - Armstrong

"I've done things - things I'm not proud of."

Armstrong Truth

Character in And Then There Were None

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"We are none of us infallible."

"The innocent suffer with the guilty."

"Each of us has something to hide."

"We deserve what comes."

"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."