I am writing to thankyou for all that your books have done for me. Until the age of 21 I was a devout christian. Though I attended college, I somehow managed to apply the concepts of evolution in biology class, and then go to church the next day and shake my fists at the evil evolutionists and complain about the mistreatment of creationism. Looking back, I still don't know how. Then one day I read 'Breaking The Spell' by Daniel Dennett. Reading that book was probably one of the most dramatic events of my life thus far. I went on to read several of your books as well as those by Christopher Hitchens and Sam Harris. Now, one year later, all of my friends and family know that I don't believe in a god. The only individuals I haven't told are my co-workers (not-for-profit christian organizations probably wouldn't take the news very gracefully). For the most part, my friends have been very understanding; though not one of them has yet asked me why I left religion or even brought up the subject since I told them I was an atheist. It's almost as though they see atheism as something they can be infected with if they aren't careful enough.
The most productive aspect of my life change was my sudden interest in science. Whereas before I saw no use for knowledge of the natural world, today all I want to know is why we are the way we are. I want to know how exactly it is that we as thinking rational people fit in this crazy world. I am currently a declared anthropology major (and likely, though undecided, an evolutionary psychology minor). I tell you this only so that you know that your books help people not only to see the world clearly, but to give them proper footing and perspective to seek out careers that will allow them to do the same for others. Ripples in a pond, my friend.