The Return of the King
"There go three that I love, and the smallest not the least," [Aragorn] said. "He knows not to what end he rides; yet if he knew, he still would go on."
"A little people, but of great worth are the Shire-folk," said Halbarad. "Little do they know of our long labour for the safekeeping of their borders, and yet I grudge it not."
"And now our fates are woven together," said Aragorn. "And yet, alas! here we must part." (5.2.68-70)
So Pippin poured out his tale, reaching up and touching Gandalf's knee with trembling hands. "Can't you save Faramir?"
"Maybe I can," said Gandalf; "but if I do, then others will die, I fear. Well, I must come, since no other help can reach him. But evil and sorrow will come of this. Even in the heart of our stronghold the Enemy has power to strike us: for his will it is that is at work." (5.7.8-9)
"[Faramir] will not wake again," said Denethor. "Battle is vain. Why should we wish to live longer? Why should we not go to death side by side?"
"Authority is not given to you, Steward of Gondor, to order the hour of your death," answered Gandalf. "And only the heathen kings, under the domination of the Dark Power, did thus, slaying themselves in pride and despair, murdering their kin to ease their own death." (5.7.30-1)