Who said "Gratitude is a sign of weakness."?

This quote is attributed to Littlefinger.

Gratitude is a sign of weakness. - Littlefinger

"Gratitude is a sign of weakness."

Littlefinger Gratitude

"Chaos isn't a pit. Chaos is a ladder."

"Knowledge is power, but power without wisdom is destruction."

"The world is not kind to those who hesitate."

"A man with no debts is a man with no leverage."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"