I Can't Find It!!!

[Guinevere]

Only through these remarks of Faramir do we get to know Boromir any closer.
It shows us the difference in the characters of the two brothers, and why Boromir would be more susceptible to the lure of the Ring. Boromir was much more ambitious than Faramir.

Faramir also tells us:

"If it were a thing that gave advantage in battle, I can well believe that Boromir, the proud and fearless, often rash, ever anxious for the victory of Minas Tirith (and his own glory therein) , might desire such a thing and be allured by it.