THE RING and corruption

[Tar-Palantir]

I like Faramir's summation of Boromir's traits the best:

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.

Parentheses are from the text, not my commentary. Add to this the insidiously alluring nature of the Ring and you have an explosive mixture.