"The whole thing is so patently infantile, so foreign to reality, that to anyone with a friendly attitude to humanity it is painful to think that the great majority of mortals will never be able to rise above this view of life. It is still more humiliating to discover how a large number of people living today, who cannot but see that this religion is not tenable, nevertheless try to defend it piece by piece in a series of pitiful rearguard actions."
--Sigmund Freud, on religion
This is one of my favorite anti-theist quotes. Freud nailed it...believing in a personal god is infantile.