Who said "Gratitude is for the weak and dependent."?

This quote is attributed to Dalek.

Gratitude is for the weak and dependent. - Dalek

"Gratitude is for the weak and dependent."

Dalek Gratitude

"Exterminate! Exterminate!"

"You will be exterminated!"

"Daleks do not feel pity or remorse or fear."

"We are superior. We are pure."

"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"