I think the book reveals itself in different stages. I read it when I was very young and liked it for the ideas. Then I read it when I was older and it made a totally different impact on me and I took a different message. I am sure if I read it now, I will understand it differently. I guess this is true for many books that we read. Anyhow, The Prophet is one of my favourite books.
Yeah, a lot of poetry is like that. It means something different depending on where you're at in your life at the time.
I considered having a reading from The Prophet at my wedding but decided against it because I thought things were getting a bit too sixties and hippyish (it was already a non religious, outdoor ceremony, I wasn't wearing white and was planning to get married barefoot). These days I don't think I'd care about that.