Who said this?
The battle over Britain’s national existence and parliamentary independence is a battle which will be fought through to the bitter end, however long it lasts. It is a battle in which no quarter will be asked and none will be given. It is a battle in the course of which all other political lines and links will continue to be overrun and broken, as it surges one way or the other. It is a battle in which the bitterest foes of the past will stand together and the closest of old alliances be destroyed. I say these things in no spirit of bravado. They are cold and sober deductions from fact, the fact that the fight is about the continued existence of the nation itself, an issue to which by definition all other political issues and causes whatsoever must be subordinated, as to the greater which subsumes the less.
See Seth’s post for the answer.