Onde esperança e desespero são iguais
'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.'
They were silent for a while. At length Aragorn spoke. 'As I have begun, so I will go on. We come now to the very brink, where hope and despair are akin. To waver is to fall.
"The Lord of the Rings, The Return of the King", Tolkien