According to some reports, the song is about Bono's wife Ali and that she always is optimistic about things.
So I try to be like you / Try to feel it like you do / But without you it's no use / I can't see what you see / When I look at the world
Jonas Steverud (Maintainer of U2MoL) (27:th of June 2004)
I live in Toronto, and just as this album came out, U2 did an interview with a local radio station. Bono said that he wrote this song after meeting with the pope, and that this song is about the pope. The lyrics make so much more sense when you interpret them this way.
David Gonzalez twins85sympatico.ca (16th of March 2005)