Who said "We require no army. We are the army."?

This quote is attributed to Dalek.

We require no army. We are the army. - Dalek

"We require no army. We are the army."

Dalek Strength

"Exterminate! Exterminate!"

"You will be exterminated!"

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

"We are superior. We are pure."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."