Misquoting Jesus

Powell's Books - Review-a-Day - Misquoting Jesus: The Story Behind Who Changed the Bible and Why by Bart D. Ehrman, reviewed by Powells.com

Many people have a vague notion that all the original biblical texts are preserved in vaults somewhere, and translators work from those original texts. Unfortunately, that isn't the case. The earliest surviving versions of the gospels are handwritten copies dating from centuries after the original texts were written. Also, we don't just have a single version of each gospel; we have many versions, and even more fragments. The trouble is, none of the versions agree with each other. As Ehrman puts it, there are more points of disagreement between manuscripts than there are words in the Gospels. So which one is right? How can one tell what the original authors intended?