Ah! I knew it looked so familiar! The quote in my own signature is relevant to the book, as well. I've just begun readng through it for the second time. It's really neat to see someone else with a signature so near mine. ^_^
Oh, and if you click the "View Conversation" under a profile message before replying, your messages will appear on the other person's profile, so they can see what you've written on their own page. Much easier to hold a conversation that way. =)