Lord of the Rings Reread: The Siege Of Gondor
"Much must be risked in war," said Denethor. "Cair Andros is manned and no more can be sent so far. But I will not yield the River and the Pelennor unfought - not if there is a captain here who has still the courage to do his lord’s will."
Then all were silent, but at length Faramir said: “I do not oppose your will, sire. Since you are robbed of Boromir, I will go and do what I can in his stead - if you command it.”
"I do so," said Denethor.
"Then farewell!" said Faramir. "But if I should return, think better of me!"
"That depends on the manner of your return," said Denethor.
Gandalf it was that last spoke to Faramir ere he rode east. “Do not throw your live away rashly or in bitterness,” he said. “You will be needed here, for other things than war. Your father loves you, Faramir, and will remember it ere the end. Farewell!”