Yet between the brothers there was great love, and had been since childhood, when Boromir was the helper and protector of Faramir. No jealousy or rivalry had arisen between them since, for their father’s favour or for the praise of men. It did not seem possible to Faramir that any one in Gondor could rival Boromir, heir of Denethor, Captain of the White Tower; and of like mind was Boromir. Yet it proved otherwise at the test.
“When he saw the pale face of Faramir he caught his breath. It was the face of one who had been assailed by a great fear or anguish, but has mastered it and now is quiet. Proud and grave he stood for a moment…and Pippin gazing at him saw how closely he resembled his brother Boromir—whom Pippin had liked from the first, admiring the great man’s lordly but kindly manner. Yet suddenly for Faramir his heart was strangely moved with a feeling that he had not known before. Here was one with an air of high nobility such as Aragorn at times revealed, less high perhaps, yet also less incalculable and remote: one of the Kings of Men born into a later time, but touched with the wisdom and sadness of the Elder Race. He knew now why Beregond spoke his name with love. He was a captain that men would follow, that he would follow, even under the shadow of the black wings.” - Return of the King, J. R. R. Tolkien.
But fear no more! I would not take this thing, if it lay by the highway. Not were Minas Tirith falling in ruin and I alone could save her, so, using the weapon of the Dark Lord for her good and my glory. No, I do not wish for such triumphs.
“A broken sword was on his knee. I saw many wounds on him. It was Boromir, my brother, dead. I knew his gear, his sword, his beloved face. One thing only I missed: his horn. One thing only I knew not: a fair belt, as it were of linked golden leaves, about his waist. Boromir! I cried. Where is thy horn? Whither goest thou? O Boromir! But he was gone. The boat turned into the stream and passed glimmering on into the night. Dreamlike it was, and yet no dream, for there was no waking. And I do not doubt that he is dead and has passed down the River to the Sea.” - J. R. R. Tolkien, The Two Towers