Who said "We alone are pure. All others are inferior."?

This quote is attributed to Dalek.

We alone are pure. All others are inferior. - Dalek

"We alone are pure. All others are inferior."

Dalek Faith

"Exterminate! Exterminate!"

"You will be exterminated!"

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

"We are superior. We are pure."

"Faith guides me through difficult times."

"Faith is believing when you can't see."

"You have to believe in something, or you'll fall for anything."

"Faith in God and in each other is what sustains us"