"Concerning this thing, my lords, you now all know enough for the understanding of our plight, and of Sauron’s. If he regains it, your valour is vain, and his victory will be swift and complete: so complete that none can see the end of it while this world lasts. If it is destroyed, then he will fall; and his fall will be so low that none can foresee his arising ever again. For he will lose the best part of the strength that was native to him in the beginning, and all that was made or begun with that power will crumble, and he will be maimed for ever, becoming a mere spirit of malice that gnaws itself in the shadows, but cannot again grow or take shape. And so a great evil of this world will be removed.
"Other evils there are that may come; for Sauron is himself but a servant or emissary. Yet it is not our part to muster all the tides of the world, but to do what is in us for the succour of those years wherein we are set, uprooting the evil in the fields that we know, so that those who live after may have clean earth to till. What weather they shall have is not ours to rule. ...
"We must walk open-eyed into that trap, with courage, but small hope for ourselves. For, my lords, it may well prove that we ourselves shall perish utterly in a black battle far from the living lands; so that even if Barad-dûr be thrown down, we shall not live to see a new age. But this, I deem, is our duty. And better so than to perish nonetheless--as we surely shall, if we sit here--and know as we die that no new age shall be.”
J.R.R. Tolkien, Lord Of The Rings: The Return of the King, “The Last Debate”
