Berserker

And so, among men the struggle for power went on whenever the universe would allow it. On at least one planet a fight for leadership had long ago flared into civil war; and on that planet war and plague and isolation had destroyed civilization and history.

From afar my mind, powerless to give help, roamed unperceived among the minds of a barbaric people. They were a people who seemed as helpless as the sheep they tended, when there came down upon them one of the ancient bloody wolves of deep space.