Who said "We do not sleep. We do not rest. We do not cease."?

This quote is attributed to Dalek.

We do not sleep. We do not rest. We do not cease. - Dalek

"We do not sleep. We do not rest. We do not cease."

Dalek Perseverance

"Exterminate! Exterminate!"

"You will be exterminated!"

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

"We are superior. We are pure."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."