DOCTOR: General Etienne’s going to murder a couple of hundred people any day now. ACE + BENNY: What?

DOCTOR: Political prisoners he’ll have executed.

ACE: Is this another of your mystical observations?

DOCTOR: A simple matter of history, but one which occurred in such an out of the way corner of your planet that people took no notice.

ACE: I’m taking notice.

DOCTOR: No! This is a matter of recorded history: it has happened; it will happen; it must happen. None of us can stop it, and we must not even try.