Who said "We will cleanse the universe of weakness."?

This quote is attributed to Dalek.

We will cleanse the universe of weakness. - Dalek

"We will cleanse the universe of weakness."

Dalek Power

"Exterminate! Exterminate!"

"You will be exterminated!"

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

"We are superior. We are pure."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."