Mainly the lines "sometimes is seen a strange spot in the sky, a human being that was given to fly" and "the love he recieves is the love that he didn't save," (I think that's what he says) and what is said during the chorus.
I'm not saying that your wrong, but from that my personal interperation of the song is it seems something like a person close to the man of the song dies and he feels he could have prevented it, and as he tries to spread good across the world as a sort of way to atone he's stabbed by someone and dies, hence the lines "spot in the sky" and "he's flying" possibly symbolising him dying and going to heaven, and now he can no longer directly make the world better because he's now just a 'human being Given To Fly'.
Basically a man does good deeds, is killed because of it, and is ultimately forgotten.
It's probably not the 'correct' interperation, but it's a great song regardless.
